Answers for "conver a dataframe column to lower string"

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')

convert all strings in dataframe to lowercase R

RecordsWithIssues$OTHERCOUNTRY <- tolower(RecordsWithIssues$OTHERCOUNTRY)