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Creating an empty Pandas DataFrame, then filling it?
...me
import pandas as pd
import numpy as np
todays_date = datetime.datetime.now().date()
index = pd.date_range(todays_date-datetime.timedelta(10), periods=10, freq='D')
columns = ['A','B', 'C']
Note: we could create an empty DataFrame (with NaNs) simply by writing:
df_ = pd.DataFrame(index=index,...
Proper SCSS Asset Structure in Rails
..."bootstrap/bootstrap.scss";
Because of the order of the imports, you can now use the variables, loaded with @import "variables.scss"; in any other .scss file imported after it. So they can be used in type.scss in the bootstrap folder but also in my_model.css.scss.
After this create a folder named...
How to convert list of tuples to multiple lists?
...>> 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)]))
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How to compare two dates in php
How to compare two dates in php if dates are in format '03_01_12' and '31_12_11' .
15 Answers
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PowerShell Script to Find and Replace for all Files with a Specific Extension
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UnauthorizedAccessException may also cause due to folders if you will remove the *.config to run on all files. You can add -File filter to the Get-ChildItem... Took a while to figure it out
– Amir Katz
May 16 '17 at 12:00
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How do I get an object's unqualified (short) class name?
... the class of an object within the PHP name spaced environment without specifying the full namespaced class.
22 Answers
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Convert string to binary in python
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Or if you want each binary number to be 1 byte: ' '.join(format(ord(i),'b').zfill(8) for i in st)
– ChrisProsser
Sep 15 '13 at 18:39
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How to read all files in a folder from Java?
... This should be the only answer left for the question right now in 2020 :)
– Haramoz
Feb 13 at 16:15
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How do I get a list of column names from a psycopg2 cursor?
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If you just want the column names, don't select all of the rows in the table. This is more efficient: curs.execute("SELECT * FROM people LIMIT 0")
– Demitri
Sep 6 '12 at 22:03
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vagrant up failed, /dev/vboxnetctl: no such file or directory
...untu 16.04, I followed steps 1-3 here and it solved my issues (virtual box now up and running). Thanks!
– NineToeNerd
Jan 14 '18 at 4:56
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