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Replacing column values in a pandas DataFrame
... something like this:
w['female'] = w['female'].map({'female': 1, 'male': 0})
(Here I convert the values to numbers instead of strings containing numbers. You can convert them to "1" and "0", if you really want, but I'm not sure why you'd want that.)
The reason your code doesn't work is because...
Difference between Math.Floor() and Math.Truncate()
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edited May 23 '17 at 12:03
Community♦
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answered Aug 1 '08 at 12:26
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Using NSPredicate to filter an NSArray based on NSDictionary keys
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answered Jun 6 '09 at 0:18
surakensuraken
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Handling Touch Event in UILabel and hooking it up to an IBAction
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Scott PersingerScott Persinger
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Check if any ancestor has a class using jQuery
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307
if ($elem.parents('.left').length) {
}
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How do I convert seconds to hours, minutes and seconds?
...gt;> import datetime
>>> str(datetime.timedelta(seconds=666))
'0:11:06'
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How do I rename all files to lowercase?
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answered Oct 16 '11 at 20:39
wjlwjl
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Should one use < or
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The first is more idiomatic. In particular, it indicates (in a 0-based sense) the number of iterations. When using something 1-based (e.g. JDBC, IIRC) I might be tempted to use <=. So:
for (int i=0; i < count; i++) // For 0-based APIs
for (int i=1; i <= count; i++) // For 1-ba...
Alter MySQL table to add comments on columns
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answered Jan 29 '10 at 14:18
RufinusRufinus
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Mod of negative number is melting my brain
...ould write it as
int mod(int x, int m) {
int r = x%m;
return r<0 ? r+m : r;
}
or variants thereof.
The reason it works is that "x%m" is always in the range [-m+1, m-1]. So if at all it is negative, adding m to it will put it in the positive range without changing its value modulo m.
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