Python · Output & Logging

You attach a logging.FileHandler but don't want the log file created unless something is actually logged. Which parameter helps?

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More in Output & Logging

In pprint, what does passing depth=2 do to a deeply nested structure?

What does this print (note the absence of any explicit newline)? ``` print("loading", end="") print("...done") ```

You want an error message to go to stderr, not stdout, so it doesn't mix with normal program output. How do you make print write to stderr?

A long-running loop prints progress with end="", but nothing appears on screen until the program finishes. Why, and what fixes it?

Why use pprint.pprint(obj) instead of print(obj) for a big nested list or dict?

You want pprint's nicely formatted output as a string (e.g. to log it or write to a file) rather than printed. Which function?

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