Lambda error: no module found. Cryptography.hamtaz.bindings._constant_time

Question

I created a lambda function which upload data to snowflake. I installed a all requirements in folder and zipped along with my main python file. While running in AWS it shows an error:

no module found. Cryptography.hamtaz.bindings._constant_time.

But I have this module at specified path. I don't know why it shows an error. I don't know why the error is arise.

Here is the code:

main(event, context):
  import snowflake.connector
  cnx = snowflake.connector.connect( user='xxx', password='yyyyy', account='zzzz', database="db Name", schema = "schema Name" )
  try:
    query = "SELECT * FROM Table_Name"
    cnx.cursor().execute(query)
  finally:
    cnx.close()

Answer 1

I recently encountered the same issue. It turned out my Lambda function runtime was Python 3.8 but the 'cffi' library had been compiled for Python 3.6. I created a new Lambda function with the Python 3.6 runtime and uploaded my deployment package to it and it began working right away.

Answer 2

I faced same issue recently and found it is a problem with windows environment, try to create linux environment, install Python, packages, zip your code with all libraries and then throw back to AWS lambda, hopefully it will work.