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Return two and more values from a method
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amenthes
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answered Dec 25 '09 at 11:35
Aditya MukherjiAditya Mukherji...
Replace values in list using Python [duplicate]
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207
Build a new list with a list comprehension:
new_items = [x if x % 2 else None for x in items]...
Get the Row(s) which have the max count in groups using groupby
...[1]:
Sp Mt Value count
0 MM1 S1 a 3
1 MM1 S1 n 2
2 MM1 S3 cb 5
3 MM2 S3 mk 8
4 MM2 S4 bg 10
5 MM2 S4 dgd 1
6 MM4 S2 rd 2
7 MM4 S2 cb 2
8 MM4 S2 uyi 7
In [2]: df.groupby(['Mt'], sort=False)['count'].max()
...
How can I obtain the element-wise logical NOT of a pandas Series?
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274
To invert a boolean Series, use ~s:
In [7]: s = pd.Series([True, True, False, True])
In [8]:...
Frequency table for a single variable
...s()?
>>> import pandas
>>> my_series = pandas.Series([1,2,2,3,3,3, "fred", 1.8, 1.8])
>>> my_series
0 1
1 2
2 2
3 3
4 3
5 3
6 fred
7 1.8
8 1.8
>>> counts = my_series.value_counts()
>>> counts
3 3
2 ...
How to add new item to hash
...eate the hash:
hash = {:item1 => 1}
Add a new item to it:
hash[:item2] = 2
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How to convert list of tuples to multiple lists?
...lt-in function zip() will almost do what you want:
>>> zip(*[(1, 2), (3, 4), (5, 6)])
[(1, 3, 5), (2, 4, 6)]
The only difference is that you get tuples instead of lists. You can convert them to lists using
map(list, zip(*[(1, 2), (3, 4), (5, 6)]))
...
How to return a part of an array in Ruby?
...ndex) are out of range.
a = [ "a", "b", "c", "d", "e" ]
a[2] + a[0] + a[1] #=> "cab"
a[6] #=> nil
a[1, 2] #=> [ "b", "c" ]
a[1..3] #=> [ "b", "c", "d" ]
a[4..7] #=> [ "e...
No provider for “framework:jasmine”! (Resolving: framework:jasmine)
....0",
"grunt-contrib-jshint": "~0.7.1",
"grunt-contrib-uglify": "~0.2.0",
"grunt-contrib-watch": "~0.5.2",
"grunt-google-cdn": "~0.2.0",
"grunt-newer": "~0.5.4",
"grunt-ngmin": "~0.0.2",
"grunt-rev": "~0.1.0",
"grunt-svgmin": "~0.2.0",
"grunt-usemin": "~2.0.0",
...
Subscripts in plots in R
...to write subscripts in the title or the subtitle in R.
How can I write v 1,2 with 1,2 as subscripts?
6 Answers
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