[issue12371] datetime.now() bug

olrait report at bugs.python.org
Mon Jun 20 09:41:58 CEST 2011 

New submission from olrait <martinmaqueira at gmail.com>:

Hello Everybody.

I write you because I found a bug in datetime.now(). (tested in Python 2.6.6
-r266:84297, Aug 24 2010, 18:46:32-win32) This bug is that sometime doesn´t
return milliseconds.

The code to reproduce the bug is: you have to wait a lot of time (from 20
minutes to 2 hours)

from datetime import datetime

while True:

            a=str(datetime.now())

            try:

                        b=a.split(".")[1]

                        print b

            except:

                        print "exception a=%s (if you see in this case there
are not the milliseconds) " % (str(a))

                        break

I new in this . Programing and python specially.

Best Regards

Martin Maqueira

----------
files: unnamed
messages: 138689
nosy: olrait
priority: normal
severity: normal
status: open
title: datetime.now() bug
Added file: http://bugs.python.org/file22412/unnamed

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12371>
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<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="FONT-SIZE: 12pt"> </span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Hello 
Everybody.</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I write you because I found a bug in 
datetime.now(). (tested in Python 2.6.6 -r266:84297, Aug 24 2010, 
18:46:32-win32) This bug is that sometime doesn´t return 
milliseconds.</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">The code to reproduce the bug is: 
you have to wait a lot of time (from 20 minutes to 2 
hours)</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">from datetime import 
datetime</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">while 
True:</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">            
a=str(datetime.now())</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">            
try:</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">                        
b=a.split(&quot;.&quot;)[1]</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">                        print 
b</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">            
except:</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">                        print 
&quot;exception a=%s (if you see in this case there are not the milliseconds) &quot; % 
(str(a))</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">                        
break</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I new in this . Programing and 
python specially.</span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Best 
Regards</span></font></p><p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><br></span></font></p><p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Martin Maqueira</span></font></p>

<p class="MsoNormal"><font face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>

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