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Searching Files by Content/Extension

Find files by extension

find_by_extension.py
from pathlib import Path
 
root = Path(".")
for p in root.rglob("*.md"):
    print(p)
find_by_extension.py
from pathlib import Path
 
root = Path(".")
for p in root.rglob("*.md"):
    print(p)

Search file contents

This example searches for a word in .py.py files.

search_content.py
from pathlib import Path
 
 
def search_word(root: Path, word: str):
    for p in root.rglob("*.py"):
        try:
            text = p.read_text(encoding="utf-8")
        except UnicodeDecodeError:
            continue
 
        if word in text:
            print("found in", p)
 
 
search_word(Path("."), "asyncio")
search_content.py
from pathlib import Path
 
 
def search_word(root: Path, word: str):
    for p in root.rglob("*.py"):
        try:
            text = p.read_text(encoding="utf-8")
        except UnicodeDecodeError:
            continue
 
        if word in text:
            print("found in", p)
 
 
search_word(Path("."), "asyncio")

Tips

  • skip binary files
  • limit walking large folders
  • consider ripgrep for huge repos

🧪 Try It Yourself

Exercise 1 – List Files with os.listdir

Exercise 2 – Join Paths with os.path.join

Exercise 3 – Write and Read a File

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