Message 142193 - Python tracker

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In-reply-to
Author	David.Townshend
Recipients	David.Townshend, docs@python
Date	2011年08月16日.13:49:16
SpamBayes Score	0.00048738773
Marked as misclassified	No
Message-id	<1313502559.06.0.415498401391.issue12760@psf.upfronthosting.co.za>

Content
Currently, opening a file with open(file, 'w') overwrites existing files. It would be useful for open() to raise an error when the file exists. This proposal is to add a 'c' mode to open, which has the effect to creating a file and opening it for writing, but raising an IOError if it already exists (i.e. the same as os.open(file, os.O_EXCL\|os.O_CREAT). The attached patch implements this, including tests and documentation.

Content

Currently, opening a file with open(file, 'w') overwrites existing files. It would be useful for open() to raise an error when the file exists. This proposal is to add a 'c' mode to open, which has the effect to creating a file and opening it for writing, but raising an IOError if it already exists (i.e. the same as os.open(file, os.O_EXCL|os.O_CREAT).
The attached patch implements this, including tests and documentation.

History
Date	User	Action	Args
2011年08月16日 13:49:19	David.Townshend	set	recipients: + David.Townshend, docs@python
2011年08月16日 13:49:19	David.Townshend	set	messageid: <1313502559.06.0.415498401391.issue12760@psf.upfronthosting.co.za>
2011年08月16日 13:49:18	David.Townshend	link	issue12760 messages
2011年08月16日 13:49:18	David.Townshend	create

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