Message 169958 - Python tracker

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In-reply-to
Author	ZhuangZi
Recipients	ZhuangZi, bethard
Date	2012年09月07日.00:04:49
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1346976291.75.0.854427077128.issue15874@psf.upfronthosting.co.za>

Content
When using the argparse argument fromfile_prefix_chars to obtain command line arguments from a file, it is not possible to make use of bash environment variables within this file. Ideally one would be able to `export BAR='/Users/x/Desktop/bar'`, and then give arguments such as: --foo $BAR and have this correctly expanded at read time to --foo '/Users/x/Desktop/bar'. To my knowledge, this is currently only possible if you give the arguments directly via the command line: python test.py --foo $BAR It would be great to be able to use environment variables within files as well!

Content

When using the argparse argument fromfile_prefix_chars to obtain command line arguments from a file, it is not possible to make use of bash environment variables within this file. 
Ideally one would be able to `export BAR='/Users/x/Desktop/bar'`, and then give arguments such as:
--foo
$BAR
and have this correctly expanded at read time to --foo '/Users/x/Desktop/bar'.
To my knowledge, this is currently only possible if you give the arguments directly via the command line:
python test.py --foo $BAR
It would be great to be able to use environment variables within files as well!

History
Date	User	Action	Args
2012年09月07日 00:04:53	ZhuangZi	set	recipients: + ZhuangZi, bethard
2012年09月07日 00:04:51	ZhuangZi	set	messageid: <1346976291.75.0.854427077128.issue15874@psf.upfronthosting.co.za>
2012年09月07日 00:04:50	ZhuangZi	link	issue15874 messages
2012年09月07日 00:04:49	ZhuangZi	create

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