learn-you-a-python

main.py

import numpy as np 

print("List comprehensions")
print([x**2 for x in range(10) if x % 2 == 0])

print("Nested list comprehensions")
matrix = [
    [1, 2, 3, 4],
    [5, 6, 7, 8],
    [9, 10, 11, 12],
]

# Matrix transposition using nested list comprehensions
print([[row[i] for row in matrix] for i in range(4)]
)

print("Dictionary comprehensions")
print({x: x**2 for x in range(5)})
 
# numpy
print(np.array([[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]]))

# Generator & iterator
def generate(count = 5):
    for i in range(count):
        yield i

print("Normal generator traversal")
it = generate(2)
while True:
    try:
        value = next(it)
        print(value)
    except StopIteration as e:
        break

print("With iterator")
for x in generate(2):
    print(x)

requirements.txt

numpy==1.25.2

setup.sh

# Setup the virtual environment
python3 -m venv .
source bin/activate

# For Windows(assume you are using PowerShell)
# . ./bin/Activate.ps1

# Config PyPi mirror for mainland China
pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple

# Install packages
pip install -r requirements.txt