100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Class notes Cs50 $7.99   Add to cart
Quickly navigate to
Preview
  2.  
  3. Harvard College
  4.  
  5. Cs50

Class notes

Class notes Cs50

 6 views  0 purchase

These notes provide an overview of Lecture 6 from CS50x 2024, introducing Python as a higher-level programming language. They cover essential concepts such as Python’s simplified syntax compared to C, object-oriented programming, loops, conditionals, and exceptions. The notes also include practic...

[Show more]
Last document update: 2 months ago

Preview 1 out of 4  pages

Document information

  • September 18, 2024
  • September 18, 2024
  • 4
  • 2024/2025
  • Class notes
  • David mallan
  • Week 6

Subjects

Written for

All documents for this subject (1)

Seller

avatar-seller
aprilclark1

Content preview

Python and Key Programming Concepts**

---
Python, a higher-level language designed for simplicity and efficiency. Python
builds on concepts learned in C but offers an easier syntax and automatic memory
management, making it ideal for quickly writing functional programs.

---

### Key Topics:

- **Python Introduction**:
- Unlike C, Python is interpreted, meaning you don’t need to compile your code
separately. Programs are executed directly in the Python interpreter.

- **Simplified Syntax**:
- Example: In C, you write:
```c
#include <stdio.h>
int main(void) {
printf("hello, world\n");
}
```
- In Python:
```python
print("hello, world")
```

- **Functions in Python**:
- Python makes functions easier to write and manage. For example:
```python
def check(word):
"""Returns True if word is in dictionary"""
return word.lower() in words
```

- **Working with Files**:
- Python simplifies file handling and memory management. For instance, to load a
dictionary:
```python
def load(dictionary):
with open(dictionary) as file:
words.update(file.read().splitlines())
return True
```

---

### Practical Examples:

- **Blurring an Image**:
- Using the PIL (Pillow) library, blurring an image is as simple as:
```python
from PIL import Image, ImageFilter
before = Image.open("bridge.bmp")
after = before.filter(ImageFilter.BoxBlur(1))
after.save("out.bmp")
```

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 aprilclark1. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $7.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

67474 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$7.99
  • (0)
  Add to cart