pandas Archives - IT Nursery

Programming, Python

IT Nursery

How to keep index when using pandas merge

I would like to merge two DataFrames, and keep the index from the first frame as the index on the merged dataset. However, ...

June 4, 2022
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Programming, Python

IT Nursery

How to change the datetime format in Pandas

My dataframe has a DOB column (example format 1/1/2016) which by default gets converted to Pandas dtype ‘object’. Converting this to date format ...

June 4, 2022
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Programming, Python

IT Nursery

How do I find numeric columns in Pandas?

Let’s say df is a pandas DataFrame. I would like to find all columns of numeric type. Something like: isNumeric = is_numeric(df) 12 ...

June 3, 2022
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Programming, Python

IT Nursery

Format y axis as percent

I have an existing plot that was created with pandas like this: df...

June 3, 2022
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Programming, Python

IT Nursery

How to read a .xlsx file using the pandas Library in iPython?

I want to read a .xlsx file using the Pandas Library of python and port the data to a postgreSQL table. All I ...

June 3, 2022
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Programming, Python

IT Nursery

Check if a value exists in pandas dataframe index

I am sure there is an obvious way to do this but cant think of anything slick right now. Basically instead of raising ...

June 3, 2022
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Programming, Python

IT Nursery

Pandas join issue: columns overlap but no suffix specified

I have the following data frames: print(df_a) mukey DI PI 0 100000 35 14 1 1000005 44 14 2 1000006 44 14 3 ...

June 3, 2022
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Programming, Python

IT Nursery

getting the index of a row in a pandas apply function

I am trying to access the index of a row in a function applied across an entire DataFrame in Pandas. I have something ...

June 3, 2022
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Programming, Python

IT Nursery

what is the most efficient way of counting occurrences in pandas?

I have a large (about 12M rows) DataFrame df with say: df.columns =...

June 3, 2022
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Programming, Python

IT Nursery

extract column value based on another column pandas dataframe

I am kind of getting stuck on extracting value of one variable conditioning on another variable. For example, the following dataframe: A B ...

June 2, 2022
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