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python pandas: Remove duplicates by columns A, keeping the row with the highest value in column B
...]: df.drop_duplicates(subset='A', keep="last")
Out[10]:
A B
1 1 20
3 2 40
4 3 10
You can do also something like:
In [12]: df.groupby('A', group_keys=False).apply(lambda x: x.loc[x.B.idxmax()])
Out[12]:
A B
A
1 1 20
2 2 40
3 3 10
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Remove all line breaks from a long string of text
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Mr_and_Mrs_D
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answered May 15 '13 at 13:28
Daren ThomasD...
AttributeError: 'module' object has no attribute 'urlopen'
...
This works in Python 2.x.
For Python 3 look in the docs:
import urllib.request
with urllib.request.urlopen("http://www.python.org") as url:
s = url.read()
# I'm guessing this would output the html source code ?
print(s)
...
Change navbar color in Twitter Bootstrap
...e your own Bootstrap navbar
Version notes:
- Online tool: Bootstrap 3.3.2+ / 4.0.0+
- This answer: Bootstrap 3.0.x
Available navbars
You've got two basic navbars:
<!-- A light one -->
<nav class="navbar navbar-default" role="navigation"></nav>
<!-- A dark one -->...
How do I set up email confirmation with Devise?
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3 Answers
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Functions that return a function
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123
Assigning a variable to a function (without the parenthesis) copies the reference to the functio...
Python append() vs. + operator on lists, why do these give different results?
..., a little history: the birth of the array module in Python in February 1993. it might surprise you, but arrays were added way after sequences and lists came into existence.
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How to loop through files matching wildcard in batch file
...17
Peter
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answered Sep 2 '08 at 14:28
Jim BuckJim...
How to join int[] to a character separated string in .NET?
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var ints = new int[] {1, 2, 3, 4, 5};
var result = string.Join(",", ints.Select(x => x.ToString()).ToArray());
Console.WriteLine(result); // prints "1,2,3,4,5"
EDIT: As of (at least) .NET 4.5,
var result = string.Join(",", ints.Select(x => x.T...
Replace first occurrence of pattern in a string [duplicate]
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