Python split(): Separator, Whitespace, and maxsplit
Understand Python split() whitespace rules, delimiters, empty fields, maxsplit, splitlines(), and when to use a real parser.
Tutorials
Browse Python tutorials for beginners and working developers, including syntax, libraries, examples, projects, and real problem-solving guides.
Python heapq: Min-Heap, Priority Queue, and Top-k
Build Python min-heaps, push and pop priorities, handle ties, select top-k values, and understand why a heap is not fully sorted.
Python str.translate(): Replace, Delete, and Normalize Characters
Use Python str.translate() and str.maketrans() to replace or delete characters, normalize text, and distinguish character mapping from language translation.
Python deque Empty Handling: Check, Peek, and Pop Safely
Handle an empty Python deque safely with bool, len, peek patterns, popleft, append, and queue workflows that avoid IndexError.
Unbuffered Python Output: -u, flush, and PYTHONUNBUFFERED
Make Python logs appear immediately with the -u flag, PYTHONUNBUFFERED, and targeted flush calls for stdout and stderr.
Python Exponent Operator **: Power, Precedence, and pow()
Learn how ** differs from ^, how precedence affects negative bases, and when three-argument pow() is the right tool.
Find a Character in a String with Python: find(), index(), and Regex
Find characters in Python strings with in, find(), index(), count(), any(), and regular expressions while handling missing matches and case sensitivity clearly.
Import Python from Another Directory: Packages and Project Layout
Import Python modules from another directory with package structure, absolute imports, python -m, editable installs, and safer alternatives to sys.path hacks.
Python Current Directory: os.getcwd(), Path.cwd(), and __file__
Get the Python working directory, distinguish process cwd from the script folder, and build portable paths with pathlib.
Python strftime(): Date Formatting Codes, Timezones, and Parsing
Format Python date and time objects with strftime directives, parse matching text, and handle timezone, locale, and filename boundaries.