21 lines
648 B
Python
21 lines
648 B
Python
from sqlalchemy import create_engine
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def create_connection():
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db_name = get_env_variable("DB_NAME")
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db_user = get_env_variable("DB_USER")
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db_password = get_env_variable("DB_PASSWORD")
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db_url = get_env_variable("DB_URL")
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db_connection_uri = "mysql+pymysql://{user}:{pw}@{url}/{db}".format(
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user=db_user, pw=db_password, url=db_url, db=db_name
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)
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engine = sqlalchemy.create_engine(db_connection_uri, echo=True)
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def get_env_variable(name):
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try:
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return os.environ[name]
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except KeyError:
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message = "Expected environment variable '{}' not set.".format(name)
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raise Exception(message)
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