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AttributeError: 'datetime' module has no attribute 'strptime'
...elf.date = datetime.datetime.strptime(self.d, "%Y-%m-%d")
As mentioned by Jon Clements in the comments, some people do from datetime import datetime, which would bind the datetime name to the datetime class, and make your initial code work.
To identify which case you're facing (in the future), ...
How to automatically install Ansible Galaxy roles?
...xplicitly installing a list of dependencies that have been manually listed by the human who made the playbook.
– Neil
Apr 8 at 21:31
add a comment
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Deleting folders in python recursively
...led removals will be ignored; if false or omitted, such errors are handled by calling a handler specified by onerror or, if that is omitted, they raise an exception."
– microo8
Oct 29 '12 at 8:36
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jQuery select2 get value of select tag?
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for an select called by id name instead of class name, use: $(".first").val()
– Rui Martins
Jun 21 '17 at 9:15
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Why is there no GIL in the Java Virtual Machine? Why does Python need one so bad?
... Yes Bartosz, Greg Stein did measure that in 1999. Garbage collection by reference counting was the killer, forcing huge overhead of fine grained locking. That's why a more advanced GC is crucial there.
– Alex Martelli
Jul 15 '09 at 16:19
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Python idiom to return first item or None
...If you have an empty string "" in the list, that is discarded and replaced by an empty list []. If you have a 0, also replaced by []. If you have False in there, also replaced. Etc. You might get away with this in a specific case, but this is a bad habit to develop.
– steve...
Comments in Markdown
...orth noting that link labels often need to be separated from other content by a blank line.
– Zenexer
Mar 5 '14 at 0:17
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Ruby sleep or delay less than a second?
I'm making a script with ruby that must render frames at 24 frames per second, but I need to wait 1/24th of a second between sending the commands. What is the best way to sleep for less than a second?
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Date format Mapping to JSON Jackson
...a fine field type for this. You can make the JSON parse-able pretty easily by using ObjectMapper.setDateFormat:
DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm a z");
myObjectMapper.setDateFormat(df);
In general, is there a way to process the variables before they get mapped to Object m...
Adding an arbitrary line to a matplotlib plot in ipython notebook
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You can directly plot the lines you want by feeding the plot command with the corresponding data (boundaries of the segments):
plot([x1, x2], [y1, y2], color='k', linestyle='-', linewidth=2)
(of course you can choose the color, line width, line style, etc.)
From ...