Showing posts with the label Python command line options

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How to Check Column Nulls and Replace: Pandas

Here is a post that shows how to count Nulls and replace them with the value you want in the Pandas Dataframe. We have explained the process in two steps - Counting and Replacing the Null values. Count null values (column-wise) in Pandas ## count null values column-wise null_counts = df.isnull(). sum() print(null_counts) ``` Output: ``` Column1    1 Column2    1 Column3    5 dtype: int64 ``` In the above code, we first create a sample Pandas DataFrame `df` with some null values. Then, we use the `isnull()` function to create a DataFrame of the same shape as `df`, where each element is a boolean value indicating whether that element is null or not. Finally, we use the `sum()` function to count the number of null values in each column of the resulting DataFrame. The output shows the count of null values column-wise. to count null values column-wise: ``` df.isnull().sum() ``` ##Code snippet to count null values row-wise: ``` df.isnull().sum(axis=1) ``` In the above code, `df` is the Panda

Python Command Line Options List

The complete list of command line options -b Issue warnings for calling str() with a bytes or bytearray object and no encoding argument, and comparing a bytes or bytearray with a str. Option -bb issues errors instead. -B Do not write .pyc or .pyo byte-code files on imports. -d Turn on parser debugging output (for developers of the Python core). -E Ignore Python environment variables described ahead (such as PYTHONPATH). -h Print help message and exit. -i Enter interactive mode after executing a script. Hint: useful for postmortem debugging; see also, described in Python’s library manuals. -O Optimize generated byte code (create and use .pyo byte-code files). Currently yields a minor performance improvement. -OO Operates like -O, the previous option, but also removes docstrings from byte code. -q Do not print version and copyright message on interactive startup (as of Python 3.2). -s Do not add the user site directory to the sys.path module search path. -S Do not imply “impor