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cartesian product in pandas
..._, left), (_, right) in rows)
return df.reset_index(drop=True)
Quick test:
In [46]: a = pd.DataFrame(np.random.rand(5, 3), columns=["a", "b", "c"])
In [47]: b = pd.DataFrame(np.random.rand(5, 3), columns=["d", "e", "f"])
In [48]: cartesian(a,b)
Out[48]:
a b c...
How do I grab an INI value within a shell script?
...
Just include your .ini file into bash body:
File example.ini:
DBNAME=test
DBUSER=scott
DBPASSWORD=tiger
File example.sh
#!/bin/bash
#Including .ini file
. example.ini
#Test
echo "${DBNAME} ${DBUSER} ${DBPASSWORD}"
...
Is there any simple way to find out unused strings in Android project?
....2 Android Lint does not find unused Strings, nor does it claim to. I just tested it by adding a string with a completely random id and then running Lint. I could not vote reply above down, because I don't have enough reputation :(.
– Frank Harper
Jul 31 '12 at...
StringIO in Python3
...ule StringIO is gone and from io import BytesIO should be applied instead. Tested myself on python 3.5 @ eclipse pyDev + win7 x64. Please let me know if I were wrong thanks.
– Bill Huang
Mar 5 '16 at 17:16
...
Setting “checked” for a checkbox with jQuery
...('checked', false);
Note that this is the approach used by jQuery's unit tests prior to version 1.6 and is preferable to using $('.myCheckbox').removeAttr('checked'); since the latter will, if the box was initially checked, change the behaviour of a call to .reset() on any form that contains it ...
How to sort by two fields in Java?
...es it a bit more clunky to define compared to LINQ.
Here is the full unit test for reference:
@Test
public void testChainedSorting()
{
// Create the collection of people:
ArrayList<Person> people = new ArrayList<>();
people.add(new Person("Dan", 4));
people.add(new Pers...
Python argparse: How to insert newline in the help text?
... argparse import RawTextHelpFormatter
parser = ArgumentParser(description='test', formatter_class=RawTextHelpFormatter)
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How to convert enum value to int?
...file more thoroughly anyway. In both cases you should probably have a unit test covering your next() method anyway.
– Alan Hensley
Jun 1 '16 at 16:26
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Writing Unicode text to a text file?
...file:
foo = u'Δ, Й, ק, م, ๗, あ, 叶, 葉, and 말.'
f = open('test', 'w')
f.write(foo.encode('utf8'))
f.close()
When you read that file again, you'll get a unicode-encoded string that you can decode to a unicode object:
f = file('test', 'r')
print f.read().decode('utf8')
...
What exactly can cause an “HIERARCHY_REQUEST_ERR: DOM Exception 3”-Error?
... the html tag when creating elements:
$("#target").append($("div").text("Test"));
Will raise this error because what you meant was
$("#target").append($("<div>").text("Test"));
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