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Count number of occurrences of a given substring in a string
...nDon Question
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Setting environment variables on OS X
What is the proper way to modify environment variables like PATH in OS X?
31 Answers
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How to copy commits from one branch to another?
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Convert unix time to readable date in pandas dataframe
...1), int64(1)
In [23]: df.head()
Out[23]:
date price
0 1349720105 12.08
1 1349806505 12.35
2 1349892905 12.15
3 1349979305 12.19
4 1350065705 12.15
In [25]: df['date'] = pd.to_datetime(df['date'],unit='s')
In [26]: df.head()
Out[26]:
date price
0 2012-10-08 1...
How do I get a substring of a string in Python?
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Solution for “Fatal error: Maximum function nesting level of '100' reached, aborting!” in PHP
...:)
– Kevin Remisoski
May 1 '17 at 4:05
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Peak memory usage of a linux/unix process
Is there a tool that will run a command-line and report the peak RAM usage total?
20 Answers
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Assign pandas dataframe column dtypes
...pd.DataFrame({'x': {0: 'a', 1: 'b'}, 'y': {0: '1', 1: '2'}, 'z': {0: '2018-05-01', 1: '2018-05-02'}})
df.dtypes
x object
y object
z object
dtype: object
df
x y z
0 a 1 2018-05-01
1 b 2 2018-05-02
You can apply these to each column you want to convert:
df["y"] = pd...
What are all the uses of an underscore in Scala?
...l(html))
– angelokh
Aug 31 '13 at 6:05
@angelokh That's anonymous function placeholder parameter, fifth down the list....