Python - For loop - run each line of output

Question

I guess I am running into a beginner problem: -> I want to loop over an array and insert the the values into lines of code that are executed. For the attempt below I get "SyntaxError: can't assign to operator"

#Country-subsets (all countries in dataframe)
for s in country_filter:  
  s.lower() + '_immu_edu' = immu_edu.loc[immu_edu['CountryName'] == s]

Thanks for helping!

My expected output would be:

guinea_immu_edu = immu_edu.loc[immu_edu['CountryName'] == "Guinea"]
lao_immu_edu = immu_edu.loc[immu_edu['CountryName'] == "Lao PDR"]
bf_immu_edu = immu_edu.loc[immu_edu['CountryName'] == "Burkina Faso"]
us_immu_edu = immu_edu.loc[immu_edu['CountryName'] == "United States"]
ge_immu_edu = immu_edu.loc[immu_edu['CountryName'] == "Germany"]

insert the the values into lines of code that are executed What do you mean? - Also what is your expected output? — B001ᛦ
– B001ᛦ, Commented Jun 26, 2019 at 12:16
What does it mean to 'insert values into lines of code that are executed'? Can you show what your expected output is>? — WiseDev
– WiseDev, Commented Jun 26, 2019 at 12:16
You need to store the result s.lower() + '_immu_edu' somewhere as it is a temporary (also known as an "rvalue" in some languages). You can't assign to it. — tehhowch
– tehhowch, Commented Jun 26, 2019 at 12:17
Possible duplicate of How do I create a variable number of variables? — Thierry Lathuille
– Thierry Lathuille, Commented Jun 26, 2019 at 12:29

Kshitij Saxena · Accepted Answer · 2019-06-26 12:19:33Z

0

Store your values in a dictionary and access using the keys:

my_dict = dict()
for s in country_filter:  
  my_dict[s.lower() + '_immu_edu'] = immu_edu.loc[immu_edu['CountryName'] == s]

answered Jun 26, 2019 at 12:19

Kshitij Saxena

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