[issue34803] argparse int type does not accept scientific notation

[Jesse Hostetler]

Jesse Hostetler  added the comment:

I suppose desired behavior would be to accept the argument only if it can be 
converted to int without loss of information.

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[issue34803] argparse int type does not accept scientific notation

[Jesse Hostetler]

New submission from Jesse Hostetler :

The 'argparse' module gives a parse error for integer arguments written in 
scientific notation. I would expect this to work, since integers can be 
constructed from literals in scientific notation.

Example (also attached):

import argparse
foo = int(1e3) # Works: foo = 1000
parser = argparse.ArgumentParser()
parser.add_argument( "--foo", type=int )
parser.parse_args( ["--foo=1e3"] )
# error: argument --foo: invalid int value: '1e3'

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components: Library (Lib)
files: argparse-int-scientific.py
messages: 326409
nosy: jessehostetler
priority: normal
severity: normal
status: open
title: argparse int type does not accept scientific notation
type: enhancement
versions: Python 3.7
Added file: https://bugs.python.org/file47824/argparse-int-scientific.py

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