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Substr on Pandas Dataframe
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Substr on Pandas Dataframe
#2
(Sep-01-2019, 06:21 AM)Scott Wrote: I have a DF and I want to set an if statement in a function to sum a value if the first part of a field = '10'.
You need to convert values to strings first and use .str.startswith method.

Take a look at the following minimal example I just wrote:

import pandas as pd
df = pd.DataFrame({"x": [100, 1000, 1000, 1919, 124], "y": [1, 2, 3, 4, 5]})
df.loc[df.x.astype(str).str.startswith('10'), 'y'].sum()
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Messages In This Thread
Substr on Pandas Dataframe - by Scott - Sep-01-2019, 06:21 AM
RE: Substr on Pandas Dataframe - by scidam - Sep-02-2019, 02:49 AM

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