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Why does an NSInteger variable have to be cast to long when used as a format argument?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Java String to SHA1
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return result;
}
BTW, you may get more compact representation using Base64. Apache Commons Codec API 1.4, has this nice utility to take away all the pain. refer here
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Kill child process when parent process is killed
...nable to run this in 64bit mode. Here I posted a working example, which is based on this.
– Alexander Yezutov
Feb 6 '12 at 17:55
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What is the LD_PRELOAD trick?
...load a library that does something completely radically different from the base library as though to emulate some other system.
– Joshua
Nov 26 '13 at 15:35
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Using vagrant to run virtual machines with desktop environment
My company's development environment is based on virtual machines, running on VirtualBox. We would like to move one step further, and use the capabilities of Vagrant to have the description of the machine in a text file and then be able to "raise" that machine based on that text file. Combined to pu...
Pandas read_csv low_memory and dtype options
...: int, "username": "string"})
ValueError: invalid literal for long() with base 10: 'foobar'
dtypes are typically a numpy thing, read more about them here:
http://docs.scipy.org/doc/numpy/reference/generated/numpy.dtype.html
What dtypes exists?
We have access to numpy dtypes: float, int, bool, time...
Simple insecure two-way data “obfuscation”?
...eep honest people honest, but something a little stronger than ROT13 or Base64 .
17 Answers
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Keep only date part when using pandas.to_datetime
...stored as an array of pointers and is inefficient relative to a pure NumPy-based series.
Since your concern is format when writing to CSV, just use the date_format parameter of to_csv. For example:
df.to_csv(filename, date_format='%Y-%m-%d')
See Python's strftime directives for formatting conven...
How to convert numbers between hexadecimal and decimal
... @ColeJohnson int.Parse doesn't have an option for you to specify the base as an int, just as one of a few valid NumberStyles. For base 16, either is just fine, but as a general solution, it's good to know how both work.
– Tim S.
Oct 21 '13 at 20:44
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/usr/lib/libstdc++.so.6: version `GLIBCXX_3.4.15' not found
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Yes, there is. An apt-get based solution to this problem is described here: superuser.com/questions/310809/…
– aroth
Mar 5 '13 at 4:09
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