How to check if a string "is" an int?

Duncan Booth duncan.booth at invalid.invalid
Fri Dec 23 13:16:18 CET 2005

Fredrik Lundh wrote:

> no, but all characters in the string belongs to the "digit" character
> class, which is what the "is" predicates look for.

then gave examples including:

>>>> "Life of Brian".istitle()
> False

I don't see how istitle() matches your definition of what the "is" 
predicates look for.

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