Which file mode creates a new file and raises an error if the file already exists?

Problem Statement

Explanation

Mode x is exclusive creation. It succeeds only if the file does not exist. This is useful when you want to avoid accidental overwrites. Mode w truncates existing files. Mode a appends if the file exists, or creates it if not. Mode r+ reads and writes without truncation.

Code Solution

SolutionRead Only

with open('report.txt', 'x', encoding='utf-8') as f:
    f.write('first run only')

Practice Sets

This question appears in the following practice sets:

File Handling & Modules

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Which file mode creates a new file and raises an error if the file already exists?

Problem Statement

Explanation

Code Solution

Practice Sets

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Which file mode creates a new file and raises an error if the file already exists?

Problem Statement

Explanation

Code Solution

Practice Sets

Related Questions

Is Python compiled, interpreted, or both?

Which of these joins two lists to make one new list?

Which loop runs until a condition becomes false?

Which method gives the floor value of a float?

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More from Python

Master Interviews
Anywhere, Anytime