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Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
I have a pandas DataFrame and I want to delete rows from it where the length of the string in a particular column is greater than 2.
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Running single test from unittest.TestCase via command line
... can test the tests themselves with python2.7), I was looking at 2.6.8 doc and missed so much! :-)
– Alois Mahdal
Apr 12 '13 at 15:16
1
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Ignore files that have already been committed to a Git repository [duplicate]
... untrack every file that is now in your .gitignore:
First commit any outstanding code changes, and then, run this command:
git rm -r --cached .
This removes any changed files from the index(staging area), then just run:
git add .
Commit it:
git commit -m ".gitignore is now working"
To...
Pretty-Printing JSON with PHP
...a to another script. My script builds data into a large associative array, and then outputs the data using json_encode . Here is an example script:
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HTML character decoding in Objective-C / Cocoa Touch
...SO-8859-1 character encoding scheme, which is &.
The reason the ampersand has to be encoded in RSS is it's a reserved special character.
What you need to do is parse the string and replace the entities with a byte matching the value between &# and ;. I don't know of any great ways to do t...
'echo' without newline in a shell script
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There are multiple versions of the echo command, with different behaviors. Apparently the shell used for your script uses a version that doesn't recognize -n.
The printf command has much more consistent behavior. echo is fine for simple things like echo hello, but I s...
How can I escape a double quote inside double quotes?
...done by finishing an already-opened one ('), placing the escaped one (\'), and then opening another one (').
Alternatively:
$ echo 'abc'"'"'abc'
abc'abc
$ echo "abc"'"'"abc"
abc"abc
It's done by finishing already opened one ('), placing a quote in another quote ("'"), and then opening another on...
Set Viewbag before Redirect
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I would like to complete the answer because I am using it and I faced a small problem that is when the TempData is empty for some reason (in my case I only have a message when a conversion is made). So I had to had the test if(TempData["Message"] != null) to avoid an error.
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java: run a function after a specific number of seconds
...avadoc says:
After the last live reference to a Timer object goes away and all outstanding tasks have completed execution, the timer's task execution thread terminates gracefully (and becomes subject to garbage collection). However, this can take arbitrarily long to occur.
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How to interpret API documentation function parameters?
Is there a standard to interpret the syntax of function interfaces in API documentations and if yes, how is it defined?
4 A...