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how do I insert a column at a specific column index in pandas?
... the beginning
df.insert(loc, column, value)
df = pd.DataFrame({'B': [1, 2, 3], 'C': [4, 5, 6]})
df
Out:
B C
0 1 4
1 2 5
2 3 6
idx = 0
new_col = [7, 8, 9] # can be a list, a Series, an array or a scalar
df.insert(loc=idx, column='A', value=new_col)
df
Out:
A B C
0 7 1 ...
Is there a Python function to determine which quarter of the year a date is in?
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13 Answers
13
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How can I get nth element from a list?
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156
Look here, the operator used is !!.
I.e. [1,2,3]!!1 gives you 2, since lists are 0-indexed.
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Check if two unordered lists are equal [duplicate]
...s.Counter(x) == collections.Counter(y)
>>>
>>> compare([1,2,3], [1,2,3,3])
False
>>> compare([1,2,3], [1,2,3])
True
>>> compare([1,2,3,3], [1,2,2,3])
False
>>>
share
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Round a Floating Point Number Down to the Nearest Integer?
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12 Answers
12
Active
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Oracle Differences between NVL and Coalesce
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316
COALESCE is more modern function that is a part of ANSI-92 standard.
NVL is Oracle specific, i...
Build an ASCII chart of the most commonly used words in a given text [closed]
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