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pandas convert all column names to lowercase

# rename Pandas columns to lower case
df.columns= df.columns.str.lower()
df.columns
Index(['column1', 'column2', 'column3'], dtype='object')
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pandas convert all string columns to lowercase

df = df.applymap(lambda s:s.lower() if type(s) == str else s)
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convert to lwercase in df column

df['col_name'].str.lower()
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convert all strings in dataframe to lowercase R

RecordsWithIssues$OTHERCOUNTRY <- tolower(RecordsWithIssues$OTHERCOUNTRY)
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