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- How do I select rows from a DataFrame based on column values?
Only, when the size of the dataframe approaches million rows, many of the methods tend to take ages when using df[df['col']==val] I wanted to have all possible values of "another_column" that correspond to specific values in "some_column" (in this case in a dictionary)
- Why do df and du commands show different disk usage?
15 Ok, lets check the man pages: df - report file system disk space usage and du - estimate file space usage Those two tools were meant for different propose While df is to show the file system usage, du is to report the file space usage du works from files while df works at filesystem level, reporting what the kernel says it has available
- How to iterate over columns of a pandas dataframe
66 This answer is to iterate over selected columns as well as all columns in a DF df columns gives a list containing all the columns' names in the DF Now that isn't very helpful if you want to iterate over all the columns But it comes in handy when you want to iterate over columns of your choosing only
- How do I determine the total size of a directory (folder) from the . . .
1233 Is there a simple command to display the total aggregate size (disk usage) of all files in a directory (folder)? I have tried these, and they don't do what I want: ls -l, which only displays the size of the individual files in a directory, nor df -h, which only displays the free and used space on my disks
- Use a list of values to select rows from a Pandas dataframe
In the OP, the values in list_of_values don't appear in that order in df If you want df to return in the order they appear in list_of_values, i e "sort" by list_of_values, use loc
- disk usage - Differences between df, df -h, and df -l - Ask Ubuntu
Question What are the differences between the following commands? df df -h df -l Feedback Information is greatly appreciated Thank you
- How to get set a pandas index column title or name?
To just get the index column names df index names will work for both a single Index or MultiIndex as of the most recent version of pandas As someone who found this while trying to find the best way to get a list of index names + column names, I would have found this answer useful:
- df shows all space taken, but du doesnt add up - Ask Ubuntu
df shows all space taken, but du doesn't add up Ask Question Asked 12 years, 9 months ago Modified 2 years, 7 months ago
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