Code Completion 4 Challenges

Complete the glob and fnmatch code

Practise rooted pathname matching, lazy recursive search, explicit case-sensitive matching, and literal pattern escaping.

Intermediate ~12 min read

List the CSV pathnames directly under the chosen root, sorted by name.

python Your answer

import glob
from pathlib import Path
from tempfile import TemporaryDirectory

with TemporaryDirectory() as temporary:
    root = Path(temporary)
    (root / "one.csv").touch()
    (root / "two.txt").touch()
    matches = sorted(glob.glob()
    assert matches == ["one.csv"]
    print(matches)

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Count log files recursively without collecting all matched names into a list.

python Your answer

import glob
from pathlib import Path
from tempfile import TemporaryDirectory

with TemporaryDirectory() as temporary:
    root = Path(temporary)
    (root / "deep").mkdir()
    (root / "one.log").touch()
    (root / "deep" / "two.log").touch()
    count = sum(1 for _ in glob.iglob(")
    assert count == 2
    print(count)

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Keep only names whose lowercase .csv suffix matches exactly, regardless of operating-system case rules.

python Your answer

import fnmatch

names = ["report.csv", "REPORT.CSV", "summary.txt"]
matched = [name for name in names if ]
assert matched == ["report.csv"]
print(matched)

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Turn the literal name into a glob pattern that matches its brackets as filename characters.

python Your answer

import glob

name = "release[final].csv"
pattern = 
assert pattern == glob.escape(name)
print(pattern)

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