Dear Simon,
You're right! Thanks, I realised there was a pair of double quotations.
However, I received another error related to the commit function:
################################
Traceback (most recent call last):
File "import.py", line 31, in <module>
main()
File "import.py", line 29, in main
engine.commit() # transactions are assumed, so close the transaction
finished
AttributeError: 'Engine' object has no attribute 'commit'
Thanks,
Cravan
On 13/6/19, 10:49 PM, "Simon King" <[email protected] on behalf of
[email protected]> wrote:
This line is normal (the list contains 5 strings):
143 ['The Bridge on the River Kwai', '1957', '161', 'tt0050212', '8.2']
This line is not normal (the list only contains a single string):
144 ['Lock, Stock and Two Smoking Barrels;1998;107;tt0120735;8.2']
You should look at your CSV file (in a text editor, not a spreadsheet
application) and see what is different about the "Lock, Stock" line
compared to the "River Kwai" line.
Simon
On Thu, Jun 13, 2019 at 3:39 PM Cravan <[email protected]> wrote:
>
> Hi Simon,
> Here's the result, although I actually have 250, it stopped at 144. I
have attached the codes and the .csv sheet for your reference.
>
>
> 1 ['The Lego Movie', '2014', '100', 'tt1490017', '7.8']
> 2 ['The Shawshank Redemption', '1994', '142', 'tt0111161', '9.3']
> 3 ['The Godfather', '1972', '175', 'tt0068646', '9.2']
> 4 ['The Godfather: Part II', '1974', '202', 'tt0071562', '9']
> 5 ['The Dark Knight', '2008', '152', 'tt0468569', '9']
> 6 ['12 Angry Men', '1957', '96', 'tt0050083', '8.9']
> 7 ["Schindler's List", '1993', '195', 'tt0108052', '8.9']
> 8 ['The Lord of the Rings: The Return of the King', '2003', '201', '
> tt0167260', '8.9']
> 9 ['Pulp Fiction', '1994', '154', 'tt0110912', '8.9']
> 10 ['The Good the Bad and the Ugly', '1966', '178', 'tt0060196', '8.
> 9']
> 11 ['Fight Club', '1999', '139', 'tt0137523', '8.8']
> 12 ['The Lord of the Rings: The Fellowship of the Ring', '2001', '17
> 8', 'tt0120737', '8.8']
> 13 ['Forrest Gump', '1994', '142', 'tt0109830', '8.8']
> 14 ['Star Wars: Episode V - The Empire Strikes Back', '1980', '124',
> 'tt0080684', '8.7']
> 15 ['Inception', '2010', '148', 'tt1375666', '8.8']
> 16 ['The Lord of the Rings: The Two Towers', '2002', '179', 'tt0167261',
'8.7']
> 17 ['Avengers: Endgame', '2019', '181', 'tt4154796', '8.9']
> 18 ["One Flew Over the Cuckoo's Nest", '1975', '133', 'tt0073486', '8.7']
> 19 ['Goodfellas', '1990', '146', 'tt0099685', '8.7']
> 20 ['The Matrix', '1999', '136', 'tt0133093', '8.7']
> 21 ['Seven Samurai', '1954', '207', 'tt0047478', '8.7']
> 22 ['Se7en', '1995', '127', 'tt0114369', '8.6']
> 23 ['City of God', '2002', '130', 'tt0317248', '8.6']
> 24 ['Star Wars: Episode IV - A New Hope', '1977', '121', 'tt0076759',
'8.6']
> 25 ['The Silence of the Lambs', '1991', '118', 'tt0102926', '8.6']
> 26 ["It's a Wonderful Life", '1946', '130', 'tt0038650', '8.6']
> 27 ['Life Is Beautiful', '1997', '116', 'tt0118799', '8.6']
> 28 ['Spirited Away', '2001', '125', 'tt0245429', '8.6']
> 29 ['Saving Private Ryan', '1998', '169', 'tt0120815', '8.6']
> 30 ['The Usual Suspects', '1995', '106', 'tt0114814', '8.6']
> 31 ['Leon: The Professional', '1994', '110', 'tt0110413', '8.6']
> 32 ['The Green Mile', '1999', '189', 'tt0120689', '8.6']
> 33 ['Interstellar', '2014', '169', 'tt0816692', '8.6']
> 34 ['Psycho', '1960', '109', 'tt0054215', '8.5']
> 35 ['American History X', '1998', '119', 'tt0120586', '8.5']
> 36 ['City Lights', '1931', '87', 'tt0021749', '8.5']
> 37 ['Casablanca', '1942', '102', 'tt0034583', '8.5']
> 38 ['Once Upon a Time in the West', '1968', '165', 'tt0064116', '8.5']
> 39 ['The Pianist', '2002', '150', 'tt0253474', '8.5']
> 40 ['Modern Times', '1936', '87', 'tt0027977', '8.5']
> 41 ['The Intouchables', '2011', '112', 'tt1675434', '8.5']
> 42 ['The Departed', '2006', '151', 'tt0407887', '8.5']
> 43 ['Back to the Future', '1985', '116', 'tt0088763', '8.5']
> 44 ['Terminator 2: Judgment Day', '1991', '137', 'tt0103064', '8.5']
> 45 ['Whiplash', '2014', '106', 'tt2582802', '8.5']
> 46 ['The Lion King', '1994', '88', 'tt0110357', '8.5']
> 47 ['Rear Window', '1954', '112', 'tt0047396', '8.5']
> 48 ['Gladiator', '2000', '155', 'tt0172495', '8.5']
> 49 ['Raiders of the Lost Ark', '1981', '115', 'tt0082971', '8.5']
> 50 ['The Prestige', '2006', '130', 'tt0482571', '8.5']
> 51 ['Apocalypse Now', '1979', '147', 'tt0078788', '8.5']
> 52 ['Memento', '2000', '113', 'tt0209144', '8.5']
> 53 ['Alien', '1979', '117', 'tt0078748', '8.5']
> 54 ['Grave of the Fireflies', '1988', '89', 'tt0095327', '8.5']
> 55 ['Cinema Paradiso', '1988', '155', 'tt0095765', '8.5']
> 56 ['Spider-Man: Into the Spider-Verse', '2018', '117', 'tt4633694',
'8.5']
> 57 ['The Great Dictator', '1940', '125', 'tt0032553', '8.5']
> 58 ['Sunset Boulevard', '1950', '110', 'tt0043014', '8.4']
> 59 ['The Lives of Others', '2006', '137', 'tt0405094', '8.4']
> 60 ['Dr. Strangelove or: How I Learned to Stop Worrying and Love the
Bomb', '1964', '95', '
> tt0057012', '8.4']
> 61 ['Avengers: Infinity War', '2018', '149', 'tt4154756', '8.5']
> 62 ['Paths of Glory', '1957', '88', 'tt0050825', '8.4']
> 63 ['Django Unchained', '2012', '165', 'tt1853728', '8.4']
> 64 ['The Shining', '1980', '146', 'tt0081505', '8.4']
> 65 ['WALL-E', '2008', '98', 'tt0910970', '8.4']
> 66 ['Princess Mononoke', '1997', '134', 'tt0119698', '8.4']
> 67 ['Witness for the Prosecution', '1957', '116', 'tt0051201', '8.4']
> 68 ['Oldboy', '2003', '120', 'tt0364569', '8.4']
> 69 ['Aliens', '1986', '137', 'tt0090605', '8.4']
> 70 ['The Dark Knight Rises', '2012', '164', 'tt1345836', '8.4']
> 71 ['American Beauty', '1999', '122', 'tt0169547', '8.4']
> 72 ['Once Upon a Time in America', '1984', '229', 'tt0087843', '8.4']
> 73 ['Coco', '2017', '105', 'tt2380307', '8.4']
> 74 ['Das Boot', '1981', '149', 'tt0082096', '8.4']
> 75 ['Citizen Kane', '1941', '119', 'tt0033467', '8.3']
> 76 ['Braveheart', '1995', '178', 'tt0112573', '8.4']
> 77 ['Vertigo', '1958', '128', 'tt0052357', '8.3']
> 78 ['North by Northwest', '1959', '136', 'tt0053125', '8.3']
> 79 ['Reservoir Dogs', '1992', '99', 'tt0105236', '8.3']
> 80 ['Your Name', '2015', '22', 'tt6033368', '8.9']
> 81 ['Star Wars: Episode VI - Return of the Jedi', '1983', '131',
'tt0086190', '8.3']
> 82 ['M', '1931', '99', 'tt0022100', '8.3']
> 83 ['Amadeus', '1984', '160', 'tt0086879', '8.3']
> 84 ['Requiem for a Dream', '2000', '102', 'tt0180093', '8.3']
> 85 ['Dangal', '2016', '161', 'tt5074352', '8.5']
> 86 ['3 Idiots', '2009', '170', 'tt1187043', '8.4']
> 87 ['2001: A Space Odyssey', '1968', '149', 'tt0062622', '8.3']
> 88 ['Toy Story', '1995', '81', 'tt0114709', '8.3']
> 89 ['Like Stars on Earth', '2007', '165', 'tt0986264', '8.4']
> 90 ['Eternal Sunshine of the Spotless Mind', '2004', '108', 'tt0338013',
'8.3']
> 91 ['Lawrence of Arabia', '1962', '216', 'tt0056172', '8.3']
> 92 ['A Clockwork Orange', '1971', '136', 'tt0066921', '8.3']
> 93 ["Singin' in the Rain", '1952', '103', 'tt0045152', '8.3']
> 94 ['Amelie', '2001', '122', 'tt0211915', '8.3']
> 95 ['Double Indemnity', '1944', '107', 'tt0036775', '8.3']
> 96 ['Inglourious Basterds', '2009', '153', 'tt0361748', '8.3']
> 97 ['Taxi Driver', '1976', '114', 'tt0075314', '8.3']
> 98 ['Full Metal Jacket', '1987', '116', 'tt0093058', '8.3']
> 99 ['To Kill a Mockingbird', '1962', '129', 'tt0056592', '8.3']
> 100 ['Bicycle Thieves', '1948', '89', 'tt0040522', '8.3']
> 101 ['Good Will Hunting', '1997', '126', 'tt0119217', '8.3']
> 102 ['The Kid', '1921', '68', 'tt0012349', '8.3']
> 103 ['The Sting', '1973', '129', 'tt0070735', '8.3']
> 104 ['The Hunt', '2012', '115', 'tt2106476', '8.3']
> 105 ['Toy Story 3', '2010', '103', 'tt0435761', '8.3']
> 106 ['Snatch', '2000', '102', 'tt0208092', '8.3']
> 107 ['Scarface', '1983', '170', 'tt0086250', '8.3']
> 108 ['For a Few Dollars More', '1965', '132', 'tt0059578', '8.3']
> 109 ['The Apartment', '1960', '125', 'tt0053604', '8.3']
> 110 ['Metropolis', '1927', '153', 'tt0017136', '8.3']
> 111 ['Monty Python and the Holy Grail', '1975', '91', 'tt0071853', '8.3']
> 112 ['L.A. Confidential', '1997', '138', 'tt0119488', '8.3']
> 113 ['A Separation', '2011', '123', 'tt1832382', '8.3']
> 114 ['Indiana Jones and the Last Crusade', '1989', '127', 'tt0097576',
'8.2']
> 115 ['Up', '2009', '96', 'tt1049413', '8.2']
> 116 ['Rashomon', '1950', '88', 'tt0042876', '8.3']
> 117 ['All About Eve', '1950', '138', 'tt0042192', '8.3']
> 118 ['Batman Begins', '2005', '140', 'tt0372784', '8.2']
> 119 ['Some Like It Hot', '1959', '121', 'tt0053291', '8.2']
> 120 ['Yojimbo', '1961', '110', 'tt0055630', '8.3']
> 121 ['Downfall', '2004', '156', 'tt0363163', '8.2']
> 122 ['Unforgiven', '1992', '130', 'tt0105695', '8.2']
> 123 ['Die Hard', '1988', '132', 'tt0095016', '8.2']
> 124 ['Heat', '1995', '170', 'tt0113277', '8.2']
> 125 ['The Treasure of the Sierra Madre', '1948', '126', 'tt0040897',
'8.2']
> 126 ['Incendies', '2010', '131', 'tt1255953', '8.3']
> 127 ['Ikiru', '1952', '143', 'tt0044741', '8.3']
> 128 ['Green Book', '2018', '130', 'tt6966692', '8.3']
> 129 ['Raging Bull', '1980', '129', 'tt0081398', '8.2']
> 130 ['The Great Escape', '1963', '172', 'tt0057115', '8.2']
> 131 ['Children of Heaven', '1997', '89', 'tt0118849', '8.3']
> 132 ["Pan's Labyrinth", '2006', '118', 'tt0457430', '8.2']
> 133 ['Chinatown', '1974', '130', 'tt0071315', '8.2']
> 134 ['My Neighbor Totoro', '1988', '86', 'tt0096283', '8.2']
> 135 ['The Third Man', '1949', '93', 'tt0041959', '8.2']
> 136 ["Howl's Moving Castle", '2004', '119', 'tt0347149', '8.2']
> 137 ['My Father and My Son', '2005', '108', 'tt0476735', '8.4']
> 138 ['Ran', '1985', '162', 'tt0089881', '8.2']
> 139 ['Judgment at Nuremberg', '1961', '186', 'tt0055031', '8.2']
> 140 ['The Secret in Their Eyes', '2009', '129', 'tt1305806', '8.2']
> 141 ['The Gold Rush', '1925', '95', 'tt0015864', '8.2']
> 142 ['A Beautiful Mind', '2001', '135', 'tt0268978', '8.2']
> 143 ['The Bridge on the River Kwai', '1957', '161', 'tt0050212', '8.2']
> 144 ['Lock, Stock and Two Smoking Barrels;1998;107;tt0120735;8.2']
> #################################
> Traceback (most recent call last):
> File "import.py", line 31, in <module>
> main()
> File "import.py", line 23, in main
> year = int(row[1])
> IndexError: list index out of range
> Cravan:cepsummative3 CPZ$
>
>
> Thanks,
> Cravan
>
>
>
> On 13/6/19, 10:27 PM, "Simon King" <[email protected] on
behalf of [email protected]> wrote:
>
> In that case I guess your "row" list only has 1 element. Try putting
> "print(i, row)" before the "title = row[0]" line.
>
> On Thu, Jun 13, 2019 at 2:21 PM Cravan <[email protected]> wrote:
> >
> > Hi,
> > I got the same error even after adding that.
> > #########################
> > Traceback (most recent call last):
> > File "import.py", line 30, in <module>
> > main()
> > File "import.py", line 22, in main
> > year = int(row[1])
> > IndexError: list index out of range
> > Thanks,
> > Cravan
> > On 13/6/19, 8:53 PM, "Simon King" <[email protected] on
behalf of [email protected]> wrote:
> >
> > You have an empty row in your CSV file (maybe a blank line at
the end?).
> >
> > Try adding this at the beginning of your loop:
> >
> > if not row:
> > continue
> >
> > On Thu, Jun 13, 2019 at 1:26 PM Cravan <[email protected]>
wrote:
> > >
> > > Thanks Simon, I got a new error this time:
> > > #####################
> > > Traceback (most recent call last):
> > > File "import.py", line 28, in <module>
> > > main()
> > > File "import.py", line 20, in main
> > > year = int(row[1])
> > > IndexError: list index out of range
> > >
> > > Thanks,
> > > Cravan
> > >
> > > On 13/6/19, 8:19 PM, "Simon King"
<[email protected] on behalf of [email protected]> wrote:
> > >
> > > It's worth pointing out that your first and last errors
are database
> > > errors from postgresql, whereas the middle syntax error
was a Python
> > > error.
> > >
> > > In Python, single and double-quotes are interchangeable,
and you can
> > > use whichever is more convenient for you. This is not
true for
> > > postgresql. In PG, single quotes are used for strings, and
> > > double-quotes are used for identifiers that you want to
be treated
> > > literally (eg. because they contain characters that
aren't normally
> > > allowed in identifiers, or because you want them to be
> > > case-sensitive).
> > >
> > > So in this case, you need imdbID and imdbRating to be
surrounded by
> > > double-quotes because you want them to be handled as
case-sensitive.
> > > The easiest thing to do is to change the quotes around
the whole SQL
> > > statement to be single quotes.
> > >
> > > ie.
> > >
> > > sqlalchemy.text('INSERT INTO movies(title, year, runtime,
"imdbID",
> > > "imdbRating") VALUES(...)')
> > >
> > > Simon
> > >
> > > On Thu, Jun 13, 2019 at 12:40 PM Cravan
<[email protected]> wrote:
> > > >
> > > > Alright, thanks because I created my sql column names
with imdbID, which contains caps.
> > > > However, after changing it to single-quotes, I got a
syntax error.
> > > > ###################################
> > > > Traceback (most recent call last):
> > > > File
"/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
> > > > /site-packages/sqlalchemy/engine/base.py", line 1244,
in _execute_conte
> > > > xt
> > > > cursor, statement, parameters, context
> > > > File
"/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
> > > > /site-packages/sqlalchemy/engine/default.py", line 550,
in do_execute
> > > > cursor.execute(statement, parameters)
> > > > psycopg2.errors.SyntaxError: syntax error at or near
"'imdbID'"
> > > > LINE 1: INSERT INTO movies(title, year, runtime,
'imdbID', 'imdbRati...
> > > > ^
> > > >
> > > >
> > > > The above exception was the direct cause of the
following exception:
> > > > Traceback (most recent call last):
> > > > File "import.py", line 28, in <module>
> > > > main()
> > > > File "import.py", line 25, in main
> > > > engine.execute(insert_statement, title=title,
year=year, runtime=ru
> > > > ntime, imdbID=imdbID, imdbRating=imdbRating)
> > > > File
"/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
> > > > /site-packages/sqlalchemy/engine/base.py", line 2166,
in execute
> > > > return connection.execute(statement, *multiparams,
**params)
> > > > File
"/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
> > > > /site-packages/sqlalchemy/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/sqlalchemy/sql/elements.py", line 287,
in _execute_on_co
> > > > nnection
> > > > return connection._execute_clauseelement(self,
multiparams, params)
> > > > File
"/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
> > > > /site-packages/sqlalchemy/engine/base.py", line 1107,
in _execute_claus
> > > > eelement
> > > > distilled_params,
> > > > File
"/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
> > > > /site-packages/sqlalchemy/engine/base.py", line 1248,
in _execute_conte
> > > > xt
> > > > e, statement, parameters, cursor, context
> > > > File
"/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
> > > > /site-packages/sqlalchemy/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/sqlalchemy/util/compat.py", line 383, in
raise_from_caus
> > > > e
> > > > reraise(type(exception), exception, tb=exc_tb,
cause=cause)
> > > > File
"/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
> > > > /site-packages/sqlalchemy/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/sqlalchemy/engine/base.py", line 1244,
in _execute_conte
> > > > xt
> > > > cursor, statement, parameters, context
> > > > File
"/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
> > > > /site-packages/sqlalchemy/engine/default.py", line 550,
in do_execute
> > > > cursor.execute(statement, parameters)
> > > > sqlalchemy.exc.ProgrammingError:
(psycopg2.errors.SyntaxError) syntax e
> > > > rror at or near "'imdbID'"
> > > > LINE 1: INSERT INTO movies(title, year, runtime,
'imdbID', 'imdbRati...
> > > > [SQL: INSERT INTO movies(title, year, runtime,
'imdbID', 'imdbRating')
> > > > VALUES (%(title)s, %(year)s, %(runtime)s, %(imdbID)s,
%(imdbRating)s)]
> > > > [parameters: {'title': 'The Lego Movie', 'year': 2014,
'runtime': 100,
> > > > 'imdbID': 'tt1490017', 'imdbRating': 7.8}]
> > > > (Background on this error at: http://sqlalche.me/e/f405)
> > > > Thanks,
> > > > Cravan
> > > >
> > > >
> > > >
> > > > On 13/6/19, 7:36 PM, "Simon King"
<[email protected] on behalf of [email protected]> wrote:
> > > >
> > > > You've got double-quotes around "imdbID" and
"imdbRating" on that
> > > > line, and double-quotes around the SQL statement,
which is a syntax
> > > > error. I think you should be able to just remove
the quotes around the
> > > > column names, but if you really need them for some
reason, replace the
> > > > outer double-quotes with single-quotes.
> > > >
> > > > Simon
> > > >
> > > > On Thu, Jun 13, 2019 at 12:20 PM Cravan
<[email protected]> wrote:
> > > > >
> > > > > I got a new error after using Simon's suggestion,
would someone help me?
> > > > > ######################################
> > > > > File "import.py", line 24
> > > > > insert_statement = sqlalchemy.text("INSERT
INTO movies(title, year,
> > > > > runtime, "imdbID", "imdbRating") VALUES (:title,
:year, :runtime, :imd
> > > > > bID, :imdbRating)")
> > > > >
> > > > > ^
> > > > > SyntaxError: invalid syntax
> > > > > Thanks,
> > > > > Cravan
> > > > > On 13/6/19, 7:10 PM, "Simon King"
<[email protected] on behalf of [email protected]> wrote:
> > > > >
> > > > > Your "engine.execute" statement looks wrong
to me:
> > > > >
> > > > > engine.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 })
> > > > >
> > > > > In particular, the VALUES clause is wrong.
That's not the way that you
> > > > > specify parameters when executing a
parametrized query, so the
> > > > > database is interpreting "(title)" as a
reference to a column, rather
> > > > > than a reference to a parameter.
> > > > >
> > > > > You're probably best off using SQLAlchemy's
text() construct:
> > > > >
> > > > >
https://docs.sqlalchemy.org/en/13/core/tutorial.html#using-textual-sql
> > > > >
> > > > > You would put this outside the loop:
> > > > >
> > > > > insert_statement = sqlalchemy.text(
> > > > > "INSERT INTO movies(title, year, runtime,
imdbID, imdbRating)
> > > > > VALUES (:title, :year, :runtime, :imdbID,
:imdbRating)"
> > > > > )
> > > > >
> > > > > and then inside the loop you would use:
> > > > >
> > > > > engine.execute(insert_statement, title=title,
year=year,
> > > > > runtime=runtime, imdbID=imdbID,
imdbRating=imdbRating)
> > > > >
> > > > > Also, I suspect (but haven't verified) that
"engine.execute()" will
> > > > > check out a connection from the pool, run the
statement, and commit a
> > > > > transaction. If you want to import all the
rows in a single
> > > > > transaction, you should probably explicitly
create a connection at the
> > > > > beginning, use "connection.execute()" to run
your SQL, and commit it
> > > > > at the end. See
> > > > >
https://docs.sqlalchemy.org/en/13/core/connections.html#using-transactions
> > > > > for examples.
> > > > >
> > > > > Hope that helps,
> > > > >
> > > > > Simon
> > > > >
> > > > >
> > > > > On Thu, Jun 13, 2019 at 11:15 AM Cravan
<[email protected]> wrote:
> > > > > >
> > > > > > 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 csv
> > > > > > import sys
> > > > > > import os
> > > > > > from sqlalchemy import Column, ForeignKey,
Integer, String
> > > > > > from sqlalchemy import create_engine
> > > > > > from flask import Flask, render_template,
request, session
> > > > > > from flask_sqlalchemy import SQLAlchemy
> > > > > > from flask_session import Session
> > > > > >
> > > > > > 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
> > > > > >
> > > > > > def main():
> > > > > > f = open("movies.csv","r")
> > > > > > reader = csv.reader(f, delimiter=';')
> > > > > > for i, row in enumerate(reader): # loop
gives each column a name
> > > > > > if i == 0:
> > > > > > continue
> > > > > > title = row[0]
> > > > > > year = int(row[1])
> > > > > > runtime = int(row[2])
> > > > > > imdbID = row[3]
> > > > > > imdbRating = float(row[4])
> > > > > > engine.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 })
> > > > > > engine.commit() # transactions are
assumed, so close the transaction finished
> > > > > > if __name__ == "__main__":
> > > > > > main()
> > > > > >
> > > > > > SQL code:
> > > > > >
> > > > > > CREATE TABLE movies (
> > > > > > "title" SERIAL PRIMARY KEY,
> > > > > > "year" INTEGER NOT NULL,
> > > > > > "runtime" INTEGER NOT NULL,
> > > > > > "imdbID" VARCHAR NOT NULL,
> > > > > > "imdbRating" INTEGER NOT NULL
> > > > > > );
> > > > > >
> > > > > > New error code:
> > > > > >
> > > > > > Traceback (most recent call last):
> > > > > > File
"/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
> > > > > > packages/sqlalchemy/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/sqlalchemy/engine/default.py",
line 550, in do_execute
> > > > > > cursor.execute(statement, parameters)
> > > > > > psycopg2.errors.UndefinedColumn: column
"title" does not exist
> > > > > > LINE 1:
...,"year","runtime","imdbID","imdbRating") VALUES ((title), (y...
> > > > > >
^
> > > > > > HINT: There is a column named "title" in
table "movies", but it cannot be re
> > > > > > ferenced from this part of the query.
> > > > > >
> > > > > >
> > > > > > The above exception was the direct cause of
the following exception:
> > > > > > Traceback (most recent call last):
> > > > > > File "import.py", line 26, in <module>
> > > > > > main()
> > > > > > File "import.py", line 23, in main
> > > > > > {"title": title, "year": year,
"runtime": runtime, "imdbID": imdbID, "imd
> > > > > > bRating": imdbRating })
> > > > > > File
"/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
> > > > > > packages/sqlalchemy/engine/base.py", line
2166, in execute
> > > > > > return connection.execute(statement,
*multiparams, **params)
> > > > > > File
"/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
> > > > > > packages/sqlalchemy/engine/base.py", line
982, in execute
> > > > > > return self._execute_text(object_,
multiparams, params)
> > > > > > File
"/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
> > > > > > packages/sqlalchemy/engine/base.py", line
1155, in _execute_text
> > > > > > parameters,
> > > > > > File
"/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
> > > > > > packages/sqlalchemy/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/sqlalchemy/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/sqlalchemy/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/sqlalchemy/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/sqlalchemy/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/sqlalchemy/engine/default.py",
line 550, in do_execute
> > > > > > cursor.execute(statement, parameters)
> > > > > > sqlalchemy.exc.ProgrammingError:
(psycopg2.errors.UndefinedColumn) column "ti
> > > > > > tle" does not exist
> > > > > > LINE 1:
...,"year","runtime","imdbID","imdbRating") VALUES ((title), (y...
> > > > > >
^
> > > > > > HINT: There is a column named "title" in
table "movies", but it cannot be re
> > > > > > ferenced from this part of the query.
> > > > > >
> > > > > > [SQL: INSERT INTO
movies("title","year","runtime","imdbID","imdbRating") VALU
> > > > > > ES ((title), (year), (runtime), (imdbID),
(imdbRating))]
> > > > > > [parameters: {'title': 'Title', 'year':
'Year', 'runtime': 'Runtime', 'imdbID
> > > > > > ': 'imdbID', 'imdbRating': 'imdbRating\n'}]
> > > > > > (Background on this error at:
http://sqlalche.me/e/f405)
> > > > > >
> > > > > > --
> > > > > > SQLAlchemy -
> > > > > > The Python SQL Toolkit and Object
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> > > > > >
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