[Tutor] Error when trying to insert csv values into a sql table

[Cravan]

Here is the stack overflow link: https://stackoverflow.com/questions/56540292/error-when-trying-to-insert-csv-values-into-a-sql-table

 

I'm getting a weird error code when I try to store values from a csv into an sql table in a movie review assignment.

I have already edited my apostrophes and spacing and looked up examples from google to try and resolve my error to no avail. I also ensured that i defined DATABASE_URL properly. Sorry for the long traceback error at the end :P Please note that my csv values are stored in lists in each cell. They are arranged in a single column such as

The Lego Movie;2014;100;tt1490017;7.8

This is my main code

import os

from sqlalchemy import create_engine

from sqlalchemy.orm import scoped_session, sessionmaker

 

engine = create_engine(os.getenv("DATABASE_URL")) # database engine object from SQLAlchemy that manages connections to the database

                                                  # DATABASE_URL is an environment variable that indicates where the database lives

 

db = scoped_session(sessionmaker(bind=engine)) 

def main():

    f = open("movies.csv","r")

    reader = csv.reader(f)

    for row in f: # loop gives each column a name

        vals = row.split(';')

        title = vals[0]

        year = vals[1]

        runtime = vals[2]

        imdbID = vals[3]

        imdbRating = vals[4]

        db.execute('INSERT INTO movies (Title, Year, Runtime, imdbID, imdbRating) VALUES (:title, :year, :runtime, :imdbID, :imdbRating)',

                      {'title': title, 'year': year, 'runtime': runtime, 'imdbID': imdbID, 'imdbRating': imdbRating}) # substitute values from CSV line into SQL command, as per this dict

        print(f"Added movie named {title} of {year} lasting {runtime} minutes. Its imdbID is {imdbID} and its imdbRating is {imdbRating}.")

This is the sql

CREATE TABLE movies (

      Title SERIAL PRIMARY KEY,

      Year INTEGER NOT NULL,

      Runtime INTEGER NOT NULL

      imdbID VARCHAR NOT NULL,

      imdbRating INTEGER NOT NULL

  );

This is the error i got:

Traceback (most recent call last):

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sqla

lchemy/engine/base.py", line 1244, in _execute_context

    cursor, statement, parameters, context

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sqla

lchemy/engine/default.py", line 550, in do_execute

    cursor.execute(statement, parameters)

psycopg2.errors.UndefinedTable: relation "movies" does not exist

LINE 1: INSERT INTO movies (Title, Year, Runtime, imdbID, imdbRating...

The above exception was the direct cause of the following exception:

 

Traceback (most recent call last):

  File "import.py", line 25, in <module>

    main()

  File "import.py", line 21, in main

    {'title': title, 'year': year, 'runtime': runtime, 'imdbID': imdbID, 'imdbRating': imd

bRating}) # substitute values from CSV line into SQL command, as per this dict

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sqla

lchemy/orm/scoping.py", line 162, in do

    return getattr(self.registry(), name)(*args, **kwargs)

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sqla

lchemy/orm/session.py", line 1268, in execute

    clause, params or {}

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sqla

lchemy/orm/session.py", line 1268, in execute

    clause, params or {}

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sqla

lchemy/engine/base.py", line 988, in execute

    return meth(self, multiparams, params)

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sqla

lchemy/sql/elements.py", line 287, in _execute_on_connection

    return connection._execute_clauseelement(self, multiparams, params)

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sqla

lchemy/engine/base.py", line 1107, in _execute_clauseelement

    distilled_params,

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sqla

lchemy/engine/base.py", line 1248, in _execute_context

e, statement, parameters, cursor, context

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sqla

lchemy/engine/base.py", line 1466, in _handle_dbapi_exception

    util.raise_from_cause(sqlalchemy_exception, exc_info)

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sqla

lchemy/util/compat.py", line 383, in raise_from_cause

    reraise(type(exception), exception, tb=exc_tb, cause=cause)

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sqla

lchemy/util/compat.py", line 128, in reraise

    raise value.with_traceback(tb)

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sqla

lchemy/engine/base.py", line 1244, in _execute_context

    cursor, statement, parameters, context

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sqla

lchemy/engine/default.py", line 550, in do_execute

cursor.execute(statement, parameters)

sqlalchemy.exc.ProgrammingError: (psycopg2.errors.UndefinedTable) relation "movies" does n

ot exist

LINE 1: INSERT INTO movies (Title, Year, Runtime, imdbID, imdbRating...

                    ^

 

[SQL: INSERT INTO movies (Title, Year, Runtime, imdbID, imdbRating) VALUES (%(title)s, %(y

ear)s, %(runtime)s, %(imdbID)s, %(imdbRating)s)]

[parameters: {'title': 'Title', 'year': 'Year', 'runtime': 'Runtime', 'imdbID': 'imdbID',

'imdbRating': 'imdbRating\n'}]

(Background on this error at: http://sqlalche.me/e/f405)