Python Standard Library

Guides to Python's most-used standard library modules — the batteries that come included. Each module has an overview plus pages on its key functions.

30 pages

os — files & the operating system 6

os.chdir() Function Explained Master os.chdir function explained in our comprehensive Python beginner guide. os.getcwd() Function Explained Master os.getcwd function explained in our comprehensive Python beginner guide. os.listdir() Function Explained Master os.listdir function explained in our comprehensive Python beginner guide. os.path.exists() Function Explained Master os.path.exists function explained in our comprehensive Python beginner guide. os.path.join() Function Explained Master os.path.join function explained in our comprehensive Python beginner guide. Python os Module Overview Master python os module overview in our comprehensive Python beginner guide.

sys — the interpreter 4

Python sys Module Overview Master python sys module overview in our comprehensive Python beginner guide. sys.argv Explained Master sys.argv explained in our comprehensive Python beginner guide. sys.exit() Function Explained Master sys.exit function explained in our comprehensive Python beginner guide. sys.path Explained Master sys.path explained in our comprehensive Python beginner guide.

json — reading & writing JSON 5

json.dump() Function Explained Master json.dump function explained in our comprehensive Python beginner guide. json.dumps() Function Explained Master json.dumps function explained in our comprehensive Python beginner guide. json.load() Function Explained Master json.load function explained in our comprehensive Python beginner guide. json.loads() Function Explained Master json.loads function explained in our comprehensive Python beginner guide. Python json Module Overview Master python json module overview in our comprehensive Python beginner guide.

datetime — dates & times 4

datetime.now() Explained Master datetime.now explained in our comprehensive Python beginner guide. datetime.strftime() Explained Master datetime.strftime explained in our comprehensive Python beginner guide. datetime.strptime() Explained Master datetime.strptime explained in our comprehensive Python beginner guide. Python datetime Module Overview Master python datetime module overview in our comprehensive Python beginner guide.

time — timing & delays 3

Python time Module Overview Master python time module overview in our comprehensive Python beginner guide. time.sleep() Function Explained Master time.sleep function explained in our comprehensive Python beginner guide. time.time() Function Explained Master time.time function explained in our comprehensive Python beginner guide.

math — numbers & calculations 4

math.ceil() and math.floor() Explained Master math.ceil and math.floor explained in our comprehensive Python beginner guide. math.pow() Function Explained Master math.pow function explained in our comprehensive Python beginner guide. math.sqrt() Function Explained Master math.sqrt function explained in our comprehensive Python beginner guide. Python math Module Overview Master python math module overview in our comprehensive Python beginner guide.

random — randomness 4

Python random Module Overview Master python random module overview in our comprehensive Python beginner guide. random.choice() Function Explained Master random.choice function explained in our comprehensive Python beginner guide. random.randint() Function Explained Master random.randint function explained in our comprehensive Python beginner guide. random.shuffle() Function Explained Master random.shuffle function explained in our comprehensive Python beginner guide.