KnowCardPython · Files & Paths (pathlib)
shutil.copytree(src, dst) fails if dst already exists. What does it do, and how do you skip certain files?
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A function does if Path(name).is_file(): process(name). The file exists but the branch never runs. What's the most likely cause?
What does os.path.basename("/usr/include/") return — and why might it surprise you?
What does this return, and what's the trap?
```
import os.path
os.path.join("/home/me", "/etc", "x")
```
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