This contains relevant lines of codes and commands as well as examples for the material of Introduction to Python. This summary does not include theoretical or conceptual parts. This document might be especially useful because it is an allowed exam material, i.e. one can use it during the exam and ...
→ substring = what should be found !r = string with “ “
Start, end → index positions Datetime f – string:
i.e. i.e. print(f” Today is {today: %B, %d, %y}”)
for i in x: in-line function like lambda:
try:
print(i.find(….)) num1 = …
except Value Error:
print(…) num2 = …
print(f”{num1} plus {num2} is {num1 + num2}”)
Print words on separate lines:
or with functions:
X=“…“
def main(num1, num2)
for word in x.split():
return num1 + num2
print(x)
print(f” … is {main(10, 20}”)
String Formatting:
Template method
Positional Formatting:
from string import Template
“text { } “.format(values to be included)
→ using $ as placeholder
print(“ text { } … .format(string1, string2 …)”)
(1) Create template
with index:
→ string1 = Template(“… $identifier .. “)
print(“ {index 1} … {index 2..}”.format(strings1 ..)”)
(2) Fill identifier variable
Placeholders with dictionary:
→ string1.substitute(identifier=”…..”)
dict1 = {key1: value1, key2: value2}
Use ${identifier} when elements are directly on
print(“{data[key1]} … “.format(data = dict1))
string1.safe_substitute(…) → only fills where
specify inside placeholder which format
possible, unfilled identifiers are unchanged
→ {index: format}
i=…
f – strings:
i.isnumeric() → if True then ..
f”literal string {expression}
print(f” …. {expression1} …)
here als {expression: format}
format → d = digit (integer)
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