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How to query MongoDB with “like”?
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In
PyMongo using Python
Mongoose using Node.js
Jongo, using Java
mgo, using Go
you can do:
db.users.find({'name': {'$regex': 'sometext'}})
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How to add pandas data to an existing csv file?
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You can specify a python write mode in the pandas to_csv function. For append it is 'a'.
In your case:
df.to_csv('my_csv.csv', mode='a', header=False)
The default mode is 'w'.
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Can I change the root EBS device of my amazon EC2 instance?
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/dev/sda1 for Linux /dev/xvda for Windows
– Luis
Oct 13 '15 at 23:48
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In Django, how does one filter a QuerySet with dynamic field lookups?
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Python's argument expansion may be used to solve this problem:
kwargs = {
'{0}__{1}'.format('name', 'startswith'): 'A',
'{0}__{1}'.format('name', 'endswith'): 'Z'
}
Person.objects.filter(**kwargs)
This is a very c...
finding and replacing elements in a list
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This is a bad and very un-pythonic solution. Consider using list comprehension.
– AdHominem
Dec 31 '16 at 11:56
233
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Getting rid of \n when using .readlines() [duplicate]
...d rows with tab-separated fields?" I would definitely recommend the use of python's CSV module. I would not be giving tips that are applicable to a purely text file with CR-separated lines of data. So tab-separated values is a circumstance where that would be bad and if stated that way, this answer ...
Visual Studio support for new C / C++ standards?
...ipse for your programming environment. Portability of code across Windows-Linux-Solaris-AIX-etc is usually important in my experience, and that is not at all supported by MS tools, unfortunately.
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Create a folder if it doesn't already exist
... return is_dir($dirpath) || mkdir($dirpath, $mode, true);
}
Inspired by Python's os.makedirs()
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Error handling in Bash
...s I have found on the web was written by William Shotts, Jr at http://www.linuxcommand.org .
14 Answers
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glob exclude pattern
... This must be at official documentation, please somebody add this to docs.python.org/3.5/library/glob.html#glob.glob
– Vitaly Zdanevich
Jul 12 '16 at 6:40
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