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Filter dataframe rows if value in column is in a set list of values [duplicate]
I have a Python pandas DataFrame rpt :
7 Answers
7
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Check if a value is in an array (C#)
...lement == "perls");
bool b = Array.Exists(array, element => element == "python");
bool c = Array.Exists(array, element => element.StartsWith("d"));
bool d = Array.Exists(array, element => element.StartsWith("x"));
// Display bools.
Console.WriteLine(a);
Console.WriteLine(b);
Console.WriteL...
Is there a Unix utility to prepend timestamps to stdin?
I ended up writing a quick little script for this in Python, but I was wondering if there was a utility you could feed text into which would prepend each line with some text -- in my specific case, a timestamp. Ideally, the use would be something like:
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Get the new record primary key ID from MySQL insert query?
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If in python using pymysql, from the cursor you can use cursor.lastrowid
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Can I get “&&” or “-and” to work in PowerShell?
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If your command is available in cmd.exe (something like python ./script.py, but not PowerShell command like ii . (this means to open the current directory by Windows Explorer)), you can run cmd.exe within PowerShell. The syntax is like this:
cmd /c "command1 && command2"
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How do I search for an object by its ObjectId in the mongo console?
...ii - this example is for the MongoShell. It looks like you're running from Python, in which case you would want to do something like: db.test.find({'_id': ObjectId('4ecc05e55dd98a436ddcc47c')})
– MPlanchard
Mar 22 '17 at 0:58
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Twitter image encoding challenge [closed]
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image files and python source (version 1 and 2)
Version 1
Here is my first attempt. I will update as I go.
I have got the SO logo down to 300 characters almost lossless. My technique uses conversion to SVG vector art so it works best on li...
Recommended Vim plugins for JavaScript coding? [closed]
...avs = {
\ '*' : [],
\ 'ruby' : [],
\ 'python' : [],
\ 'perl' : [],
\ 'xml' : [],
\ 'html' : [],
\ 'xhtml' : [],
\ 'css' : [],
\ 'javascript' : [],
\ 'actionscript' : [],
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Generate list of all possible permutations of a string
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Non recursive solution according to Knuth, Python example:
def nextPermutation(perm):
k0 = None
for i in range(len(perm)-1):
if perm[i]<perm[i+1]:
k0=i
if k0 == None:
return None
l0 = k0+1
for i in range(k0+1, len...
Import CSV to mysql table
...irst row of data be used as the column names". (I would prefer a script in Python, so I don't have to install PHP, but it shouldn't be hard to port it.)
– LarsH
Mar 19 '15 at 21:46
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