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Check if a value exists in pandas dataframe index
...Y', 'Y'], 'col3': [1, 2, 3, 4]}, columns=['col1', 'col2', 'col3'])
df = df.set_index(['col1', 'col2'])
in df.index works for the first level only when checking single index value.
'a' in df.index # True
'X' in df.index # False
Check df.index.levels for other levels.
'a' in df.index.lev...
how to check if a file is a directory or regular file in python? [duplicate]
How do you check if a path is a directory or file in python?
4 Answers
4
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Query-string encoding of a Javascript Object
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@Ofri: For POST requests to a server set up to receive it, JSON is a good choice. For GET requests, if you're sending anything other than a few simple parameters to the server then it's likely your design is wrong.
– Tim Down
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How to get numbers after decimal point?
How do I get the numbers after a decimal point?
29 Answers
29
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How do I select an entire row which has the largest ID in the table?
...ign key, in which case it may not be unique. I did some benchmarking using set profiling = 1; ...; show profiles and it appears our solutions have the same performance using MySQL. For my own knowledge, do you know what DBMS has poorer performance for subselects?
– unutbu
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React JSX: selecting “selected” on selected option
In a React component for a <select> menu, I need to set the selected attribute on the option that reflects the application state.
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Get file name from URL
In Java, given a java.net.URL or a String in the form of http://www.example.com/some/path/to/a/file.xml , what is the easiest way to get the file name, minus the extension? So, in this example, I'm looking for something that returns "file" .
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Entity Framework 4 vs NHibernate [closed]
A lot has been talked about Entity Framework first version on the web (also on stackoverflow) and it is clear that it was not a good choice when we already have better alternative like NHibernate. But I can't find a good comparison of Entity Framework 4 and NHibernate. We can say that today NHiberna...
ctypes - Beginner
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How to pass arguments and redirect stdin from a file to program run in gdb?
...n gdb to execute your program with redirections and arguments, you can use set args:
% gdb ./a.out
(gdb) set args arg1 arg2 <file
(gdb) run
I was unable to achieve the same behaviour with --args parameter, gdb fiercely escapes the redirections, i.e.
% gdb --args echo 1 2 "<file"
(gdb) show...