Dit is een uitgewerkte cursus voor het vak bedrijfsinformatica van Prof Alexandre Thys. Er bestaan 2 cursusses. Een voor het theoriegedeelte en één voor het WPO gedeelte (Python). Veel succes verder !!
Contents
1. Input & Input Functions........................................................................................................................................................................... 6
2. Variables, Datatypes & Operators........................................................................................................................................................ 6
2.1 Basic Datatypes for variables......................................................................................................................................................... 6
2.2 Some predefined functions : Built-in functions....................................................................................................................... 6
2.3 Hoe type van een variabele kennen?........................................................................................................................................... 7
2.4 Variable names..................................................................................................................................................................................... 8
2.5 Overschakelen van datatype........................................................................................................................................................... 8
2.6 Some other built-in functions......................................................................................................................................................... 9
2.7 Operators................................................................................................................................................................................................ 9
2.7.1 Arithmetic Operators : + - * / // ** %................................................................................................................................. 9
2.7.2 Assignments Operators : = += -= *= /= //= **= %=.................................................................................................... 10
2.7.3 Comparison Operators : < > <= >= == !=......................................................................................................................... 10
2.7.4 Logical Operators : and or not............................................................................................................................................. 11
2.8 Exercices on Variables & Operators.......................................................................................................................................... 11
Oefening 1 : Comparaison................................................................................................................................................................ 11
Oefening 2 : Quiz.................................................................................................................................................................................. 12
Oefening 3 : Quiz.................................................................................................................................................................................. 12
Oefening 4 : Average Electricity Bill............................................................................................................................................ 12
Oefening 5 : Calculations for a tiler.............................................................................................................................................. 12
Oefening 6 : Assign and Modify Variables................................................................................................................................. 13
Oefening 7 : Sales for the week...................................................................................................................................................... 13
3. Working with strings.............................................................................................................................................................................. 14
3.1 Create a string.................................................................................................................................................................................... 14
3.2 Escape Characters............................................................................................................................................................................ 15
3.3 String Operators: + en *.................................................................................................................................................................. 16
3.4 Length of a string = number of characters............................................................................................................................. 16
3.5 String Functions / Methods.......................................................................................................................................................... 17
# allemaal kleine letters................................................................................................................................................................... 17
# Boolean Vraag : allemaal kleine letters ? -> booleaanse vraag !!!................................................................................ 17
# allemaal hoofdletters..................................................................................................................................................................... 17
# Boolean Vraag : allemaal hoofdletters ?................................................................................................................................. 17
# Enkel eerste letter VAN HET EERSTE WOORD VAN DE ZIN in hoofdletter.............................................................17
# enkel eerste letter VAN ELK WOORD is hoofdletter......................................................................................................... 17
# use functions one after the other.............................................................................................................................................. 18
Fadia Farhat | VUB 2021-20221
, # check if numbers inside a string............................................................................................................................................... 18
# strip methode................................................................................................................................................................................... 18
# string.strip(characters) -> Characters to remove.............................................................................................................. 18
# Strings are indexed -> all characters have an index.......................................................................................................... 20
# Werken met 2 parameters........................................................................................................................................................... 20
# Format methods for strings........................................................................................................................................................ 20
# Join-Method....................................................................................................................................................................................... 21
# Split-Method...................................................................................................................................................................................... 22
# to call a character => put his index into [ ]............................................................................................................................ 22
# Indexing and Slicing....................................................................................................................................................................... 22
# Membership operators => Boolean question...................................................................................................................... 23
3.6 Exercices on Strings......................................................................................................................................................................... 23
Oefening 1 : Write a Server Log Message.................................................................................................................................. 23
Oefening 2 : Concatenation............................................................................................................................................................. 23
4. Working with Booleans......................................................................................................................................................................... 24
5. Working with numbers (float & integer)........................................................................................................................................ 25
5.1 Volgorde van de bewerkingen..................................................................................................................................................... 25
6. Datastructures........................................................................................................................................................................................... 25
6.1 Lists........................................................................................................................................................................................................ 25
6.1.1 Wat is er zo speciaal aan een list ?..................................................................................................................................... 26
6.1.2 Kenmerken lijst......................................................................................................................................................................... 26
6.1.3 Lijst aanmaken.......................................................................................................................................................................... 26
6.1.4 Datatype van een list ?........................................................................................................................................................... 27
6.1.4 Wat kan je doen met een lijst ?........................................................................................................................................... 27
6.1.5 Python Building Blocks for Lists........................................................................................................................................ 27
6.2 Tuple...................................................................................................................................................................................................... 31
6.2.1 Kenmerken van een Tuple.................................................................................................................................................... 31
6.2.2 Tuple aanmaken....................................................................................................................................................................... 31
6.2.3 Access attributes of the tuple.............................................................................................................................................. 32
6.2.4 Python Blocks for tuples....................................................................................................................................................... 32
6.3 Set........................................................................................................................................................................................................... 32
6.3.1 Kenmerken van een Set......................................................................................................................................................... 32
6.3.2 Set aanmaken............................................................................................................................................................................. 33
6.3.3 Python Blocks for Sets............................................................................................................................................................ 33
6.3.4 Sets gebruiken als verzamelingen.......................................................................................................................................... 33
6.4 Dictionary............................................................................................................................................................................................ 34
6.4.1 Dictionary Aanmaken............................................................................................................................................................. 34
6.4.2 Nagaan op welke plaats een “kolom” of de key met zijn waarde staat...............................................................34
Fadia Farhat | VUB 2021-20221
, 6.4.3 Kolom (= element of key met zijn waarde) toevoegen............................................................................................. 34
6.4.4 Nagaan of een keynaam in dictionary bestaat (kolom-naam)............................................................................... 35
6.4.5 Weergeven van alles keys = titels van de kolommen................................................................................................ 35
6.4.6 Weergeven van alle waarden van de dictionary.......................................................................................................... 35
6.4.7 Bepaalde waarde oproepen met zijn key....................................................................................................................... 35
6.4.8 Waarden oproepen met de .get() methode.................................................................................................................... 35
6.4.9 Pop Methode.............................................................................................................................................................................. 35
6.4.10 Weergeven van alle elementen van de dictionary (key met waarde)..............................................................35
6.4.11 Weergeven van de values................................................................................................................................................... 35
6.4.12 Weergeven van de keys....................................................................................................................................................... 36
6.4 Compound Data Structures.......................................................................................................................................................... 36
6.4.1 Dictionary in Dictionary........................................................................................................................................................ 36
6.4.2 Tuple in List................................................................................................................................................................................ 36
6.4.3 Tuple in Dictionary.................................................................................................................................................................. 36
6.5 Summary.............................................................................................................................................................................................. 37
6.7 Excercices............................................................................................................................................................................................ 37
Oefening1 : Quiz................................................................................................................................................................................... 37
Oefening 2 : List Indexing................................................................................................................................................................ 37
Oefening 3 : Slicing Lists................................................................................................................................................................... 38
Oefening 4 : Count, Split & Convert.............................................................................................................................................. 38
Oefening 5 : Data Structures........................................................................................................................................................... 39
Oefening 6 : Sentence Dictionary.................................................................................................................................................. 40
7 Selecties........................................................................................................................................................................................................ 41
7.1 Conditional Statements.................................................................................................................................................................. 41
7.1.1 if...................................................................................................................................................................................................... 41
7.1.2 elif ( if elif)................................................................................................................................................................................... 41
7.1.3 else with elif (if elif else)....................................................................................................................................................... 41
7.1.4 else without elif (if else)........................................................................................................................................................ 42
7.2 Ternary Operators or Conditional Expressions................................................................................................................... 42
7.2.1 Short Hand If.............................................................................................................................................................................. 42
7.2.2 Short Hand If Else..................................................................................................................................................................... 42
7.2.3 And................................................................................................................................................................................................. 42
7.2.4 Or.................................................................................................................................................................................................... 42
7.2.5 Nested If....................................................................................................................................................................................... 42
7.2.6 The Pass Statement................................................................................................................................................................. 43
7.3 Excercises on Conditional Statements..................................................................................................................................... 43
Oefening 1 : Which Prize.................................................................................................................................................................. 43
Oefening 2 : Compare Guess to Result........................................................................................................................................ 43
Fadia Farhat | VUB 2021-20221
, Oefening 3 : VAT.................................................................................................................................................................................. 44
Oefening 4 : improve statements.................................................................................................................................................. 44
Oefening 5 : Fixing Errors................................................................................................................................................................ 44
8 Iteraties (Loops)........................................................................................................................................................................................ 46
8.1 While-Loop.......................................................................................................................................................................................... 46
8.1.1 The While.................................................................................................................................................................................... 46
8.1.2 The else-statement.................................................................................................................................................................. 46
8.1.3 Break............................................................................................................................................................................................. 46
8.1.4 Continue....................................................................................................................................................................................... 47
8.2 For-Loop............................................................................................................................................................................................... 47
8.2.1 For in a range............................................................................................................................................................................. 47
8.2.2 For in a string............................................................................................................................................................................. 48
8.2.3 For in a list.................................................................................................................................................................................. 49
Exercises on Loops.................................................................................................................................................................................. 49
Oefening 1 : Even Getallen............................................................................................................................................................... 49
Oefening 2 : Oneven getallen.......................................................................................................................................................... 49
Oefening 3 : Examples – FOR loop................................................................................................................................................ 49
Oefening 4 : Examples Building dictionaries............................................................................................................................ 50
Oefening 5 : Factorials with While loops................................................................................................................................... 50
Oefening 6 : Factorials with for loops......................................................................................................................................... 51
Oefening 7 : Exercise For Loops – Usernames......................................................................................................................... 51
Oefening 8 : Iterating through Dictionaries - Fruit Basket (Count Method)...............................................................52
Oefening 9 : While Loops - Count by........................................................................................................................................... 53
Oefening 10 : While Loops - Nearest Square............................................................................................................................ 53
9 Procedures and/or Functions.............................................................................................................................................................. 54
9.1 Predefined functions....................................................................................................................................................................... 54
9.2 Self-defined functions..................................................................................................................................................................... 54
# Functions performing a task or procedure........................................................................................................................... 54
# Functions with an output value................................................................................................................................................. 54
# Writing documentation................................................................................................................................................................ 55
# Make an argument optional........................................................................................................................................................ 55
# Using None as a default argument............................................................................................................................................ 55
9.3 Exercices on Functions................................................................................................................................................................... 56
Oefening 1 : Function: population_density............................................................................................................................... 56
Oefening 2 : Function: readable_timedelta............................................................................................................................... 56
Oefening 3 : Function: divisible by 9........................................................................................................................................... 57
Oefening 4 : Football.......................................................................................................................................................................... 58
10 Reading & Writing files........................................................................................................................................................................ 59
Fadia Farhat | VUB 2021-20221
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller fadia. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $16.66. You're not tied to anything after your purchase.