Best Practices — Writing Pythonic Code

PEP 8 — Python style guide:

4 spaces for indentation (not tabs)

Max line length: 79 characters

Two blank lines between top-level functions/classes

One blank line between methods

Spaces around operators: x = 1 not x=1

Naming conventions:

snake_case for variables and functions

PascalCase for classes

UPPER_CASE for constants

_private for internal use

Pythonic patterns:

# Bad
if len(my_list) > 0:

# Good
if my_list:

# Bad
if x == True:

# Good
if x:

# Bad
result = []
for x in range(10):
    result.append(x**2)

# Good
result = [x**2 for x in range(10)]

Tools: black (auto-formatter), flake8 (linter), isort (import sorter). Run them before every commit.

Reference:

Wikipedia: Python

https://en.wikipedia.org/wiki/Python_(programming_language)