How to catch error if parquet file is empty?

[Hasham04]

how can I check if a parquet file is empty? or know that the data frame generated from reading the parquet file from s3 is empty.

[Hasham04]

my use case is: if I have an empty data frame from an ingested parquet file from s3 I don't want to do anything and just print that it's empty. otherwise, I want to do my transformations and export to s3.

[JovanVeljanoski]

Does vaex raise an error if a parquet file is empty? Maybe you can you a try and except there?
If no error and you simply get an empty dataframe, then what's wrong with

if len(df) > 0:
    continue   # do transformations
else:
    print('dataframe is empty')