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How to write to an existing excel file without overwriting data (using pandas)?
...riter gives a clue that something like this might work out:
import pandas
from openpyxl import load_workbook
book = load_workbook('Masterfile.xlsx')
writer = pandas.ExcelWriter('Masterfile.xlsx', engine='openpyxl')
writer.book = book
## ExcelWriter for some reason uses writer.sheets to access th...
Conditionally use 32/64 bit reference when building in Visual Studio
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The solution works for the default configuration, but not from my testing not if you change the configuration from the configuration from the Visual Studio (2012 in my case) Solution Configuration dropdown list.
– Sarah Weinberger
Jul 22 '13 at...
Static and Sealed class differences
...------------------+---------------------+
| Class Type | | Can inherit from others | Can be inherited | Can be instantiated |
|--------------|---|-------------------------+------------------+---------------------+
| normal | : | YES | YES | YES ...
Remove all subviews?
...views:
[[someUIView subviews]
makeObjectsPerformSelector:@selector(removeFromSuperview)];
Thank you to Tommy for pointing out that makeObjectsPerformSelector: appears to modify the subviews array while it is being enumerated (which it does for NSView, but not for UIView).
Please see this SO que...
How do I choose between Semaphore and SemaphoreSlim?
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From the MSDN documentation, "The SemaphoreSlim class is the recommended semaphore for synchronization within a single app.". Except for special cases, you should default to using SemaphoreSlim if only one process is using th...
SQL Data Reader - handling Null column values
I'm using a SQLdatareader to build POCOs from a database. The code works except when it encounters a null value in the database. For example, if the FirstName column in the database contains a null value, an exception is thrown.
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RSA Public Key format
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You can't just change the delimiters from ---- BEGIN SSH2 PUBLIC KEY ---- to -----BEGIN RSA PUBLIC KEY----- and expect that it will be sufficient to convert from one format to another (which is what you've done in your example).
This article has a good explanat...
How do I exit from the text window in Git?
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It's worth getting to know vim so you can quit it from a wide variety of applications that default to it.
– djechlin
Sep 16 '17 at 21:35
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How to set up a cron job to run an executable every hour?
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Note that you also need an absolute path (ie from the root directory) afaik
– drevicko
Apr 25 at 1:11
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Is there a Python function to determine which quarter of the year a date is in?
...for first quarter, 1 for second quarter, etc -- add 1 if you need to count from 1 instead;-).
Originally two answers, multiply upvoted and even originally accepted (both currently deleted), were buggy -- not doing the -1 before the division, and dividing by 4 instead of 3. Since .month goes 1 to...