My function in func.py
def lower_events(df):
return df.withColumn("event",f.lower(f.col("event")))
My main notebook
import pyspark.sql.functions as f
from pyspark.sql.functions import udf, col, lower
import sys
sys.path.append("..")
from folder.func. import lower_events
#from folder import func
df_clean = lower_events(df)
I am getting this error
NameError: name 'f' is not defined