Python - "case insensitive" in a string or "case ignore"
Series.str.contains has a case parameter that is True by default. Set it to False to do a case insensitive match.
df2 = df1['company_name'].str.contains("apple", na=False, case=False)
Series.str.contains has a case parameter that is True by default. Set it to False to do a case insensitive match.
df2 = df1['company_name'].str.contains("apple", na=False, case=False)