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Replacing blank values (white space) with NaN in pandas
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I think df.replace() does the job, since pandas 0.13:
df = pd.DataFrame([
[-0.532681, 'foo', 0],
[1.490752, 'bar', 1],
[-1.387326, 'foo', 2],
[0.814772, 'baz', ' '],
[-0.222552, ' ', 4],
[-1.176781, 'qux', ' '], ...
C# code to validate email address
...sent a warning giving the user a chance to say "yes, my mail server really does allow ???????????? as an email address."
As for using exception handling for business logic, I agree that is a thing to be avoided. But this is one of those cases where the convenience and clarity may outweigh the dog...
Renaming branches remotely in Git
...$2\:refs/heads/$3 :$2
}
To integrate @ksrb's comment: What this basically does is two pushes in a single command, first git push <remote> <remote>/<old_name>:refs/heads/<new_name> to push a new remote branch based on the old remote tracking branch and then git push <remot...
How to parse JSON using Node.js? [closed]
... Simple note: don't forget to use the .json extension! If your file does NOT have the .json extension, require will not treat it as a json file.
– Jason
Jan 21 '15 at 12:46
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What exactly is Python multiprocessing Module's .join() Method Doing?
...n in the background for as long as the parent process is running, but that doesn't need to be cleaned up gracefully prior to exiting the main program. Perhaps a worker process that reads data from a socket or hardware device, and feeds that data back to the parent via a queue or processes it in the ...
How to loop through file names returned by find?
...mes are already in a file, you may need to use read:
# IFS= makes sure it doesn't trim leading and trailing whitespace
# -r prevents interpretation of \ escapes.
while IFS= read -r line; do # Whitespace-safe EXCEPT newlines
process "$line"
done < filename
read can be used safely in combina...
Is there a constraint that restricts my generic method to numeric types?
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C# does not support this. Hejlsberg has described the reasons for not implementing the feature in an interview with Bruce Eckel:
And it's not clear that the added complexity is worth the small yield that you get. If somethin...
String to Dictionary in Python
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@John: Sorry to be pedantic, but json.loads() does not expect a str object encoded in ASCII -- it expects either a str object encoded in UTF-8 or a unicode object (or a str object plus an explicit encoding)
– Cameron
Feb 7 '11 at 1:...
How do I run Python code from Sublime Text 2?
...reak_key.
Note: CTRL + C will NOT work.
What to do when Ctrl + Break does not work:
Go to:
Preferences -> Key Bindings - User
and paste the line below:
{"keys": ["ctrl+shift+c"], "command": "exec", "args": {"kill": true} }
Now, you can use ctrl+shift+c instead of CTRL+BREAK
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Should it be “Arrange-Assert-Act-Assert”?
...Carl. Well, in the red part of the TDD cycle, until the encompass() really does something; the first assertion is pointless, it is only a duplication of the second. At green, it begins being useful. It is getting sense during refactoring. It could be nice to have a UT framework that does this automa...