ETL Logic: MySQL TSV Dump -> BigQuery by Python3.5 Dataflow

mysql_dump_tsv_to_bigquery_by_dataflow.py

import re

magic_word = '{{{{{converted_by_yuzutas0_dataflow}}}}}'
text = text.replace('\\\"', '\"\"').replace('\\\\', magic_word) \
    .replace('\\\"', '\\').replace(magic_word, '\\\\')

text = re.sub(r'\\$', '', text, flags=re.MULTILINE)

if text.startswith('""') and not text.startswith('"""'):
    text = text[1:]
if text.endswith('""') and not text.endswith('"""'):
    text = text[0:-1]

return text