isinstance of bool?

Question

in Python, i'd like to check to make sure a command line argument is of type bool before I use it in a conditional statement. this: isinstance(sys.argv[2], bool) is coming back false. What's the right way to do this?

whoever downvoted this clearly has not understood what this site is about: you don't vote on the content, you vote on the form. this is actually quite well written as beginner questions go. — , Apr 19 '11 at 15:18

score 7 · Accepted Answer · edited May 01 '18 at 20:33

7

All command line arguments are strings. Please refine what you want.

If you want to check for the argument true, check if sys.argv[2] equals 'true'.

edited May 01 '18 at 20:33

Russia Must Remove Putin

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answered Apr 19 '11 at 14:13

orlp

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score 6 · Answer 2 · answered Apr 19 '11 at 14:16

6

As nightcracker said, command line arguments are strings.
You can use sys.argv[2] in ('True', 'False').

answered Apr 19 '11 at 14:16

wong2

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isinstance of bool?

2 Answers2