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How do I get the row count of a Pandas DataFrame? could use df info () so you get row count (# entries), number of non-null entries in each column, dtypes and memory usage Good complete picture of the df If you're looking for a number you can use programatically then df shape [0]
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
python - What is df. values [:,1:]? - Stack Overflow df values returns a numpy array with the underlying data of the DataFrame, without any index or columns names [:, 1:] is a slice of that array, that returns all rows and every column starting from the second column (the first column is index 0)
python - What is df [0] in Pandas DataFrame - Stack Overflow SO is also not an opinion-based service, it's focus is on direct and focused questions df[0] simply refers to the first dataframe (index 0) in the list of dataframes returned by pd read_html(), per the docs
python - Renaming column names in Pandas - Stack Overflow To focus on the need to rename of replace column names with a pre-existing list, I'll create a new sample dataframe df with initial column names and unrelated new column names