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from datetime import datetime, timedelta
N = 2
date_N_days_ago = datetime.now() - timedelta(days=N)
print datetime.now()
print date_N_days_ago
Results:
2010-10-16 00:06:06.000201
2010-10-14 00:06:06.000107
For more information see the timedelta documentation
How to get the date N days ago in Python
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原文地址：http://www.cnblogs.com/ymy124/p/5514809.html
