check requirements.txt
To use the polly API, need to configure AWS authentication which is used in app.py
# Create a client using the credentials and region defined in the [adminuser]
# section of the AWS credentials file (~/.aws/credentials).
session = Session(profile_name="pollyuser")
For details about setting IAM user (with AWS CLI installed) check: https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-profiles.html#cli-configure-profiles-create
python -m flask run
Or run the app.py
from your IDE