Sqlite3 with Python returning extra data
I am working on a personal project to learn using SQLite3 with Python by creating a dvd inventory application. I have had some success with my SQLite related functions, which are in a library file, and intended to be called from other portions of the application.
I am running into a problem with extraneous data being returned in a query, in this case, the same data twice.
I am testing a function that simply queries a table, and returns all its values. If I run that function from a call within the library file it resides in, it works properly, but if I call it from an external file that imports the library file, it returns the data twice, and I am unsure why.
The function is as follows:
def query_all():
con = db_connect()
cur = con.cursor()
cur.execute('''SELECT film_id, film_name, film_genre, date_added FROM
film_inv''')
all_rows = cur.fetchall()
for row in all_rows:
print('0 : 1, 2, 3'.format(row[0], row[1], row[2], row[3]))
con.close()
When run from within the library file, it returns proper results as:
1 : Star Wars, Comedy, 2018-11-15 12:23:28
2 : Titanic, Drama, 2018-11-15 12:28:55
3 : Cars, Family, 2018-11-15 12:29:18
4 : Christmas Vacation, Holiday, 2018-11-15 12:37:59
6 : Cinderella, Family, 2018-11-15 12:43:13
Process finished with exit code 0
When called via an external file, it returns the results twice:
try:
pydvd_utils.query_all()
except Exception as e:
print(e)
1 : Star Wars, Comedy, 2018-11-15 12:23:28
2 : Titanic, Drama, 2018-11-15 12:28:55
3 : Cars, Family, 2018-11-15 12:29:18
4 : Christmas Vacation, Holiday, 2018-11-15 12:37:59
6 : Cinderella, Family, 2018-11-15 12:43:13
1 : Star Wars, Comedy, 2018-11-15 12:23:28
2 : Titanic, Drama, 2018-11-15 12:28:55
3 : Cars, Family, 2018-11-15 12:29:18
4 : Christmas Vacation, Holiday, 2018-11-15 12:37:59
6 : Cinderella, Family, 2018-11-15 12:43:13
Process finished with exit code 0
The external file, query_all.py, is simple, only calling the function:
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import pydvd_utils
try:
pydvd_utils.query_all()
except Exception as e:
print(e)
python python-3.x sqlite3
asked Nov 15 '18 at 18:13
86753098675309
45117
|
show 4 more comments
I am working on a personal project to learn using SQLite3 with Python by creating a dvd inventory application. I have had some success with my SQLite related functions, which are in a library file, and intended to be called from other portions of the application.
I am running into a problem with extraneous data being returned in a query, in this case, the same data twice.
I am testing a function that simply queries a table, and returns all its values. If I run that function from a call within the library file it resides in, it works properly, but if I call it from an external file that imports the library file, it returns the data twice, and I am unsure why.
The function is as follows:
def query_all():
con = db_connect()
cur = con.cursor()
cur.execute('''SELECT film_id, film_name, film_genre, date_added FROM
film_inv''')
all_rows = cur.fetchall()
for row in all_rows:
print('0 : 1, 2, 3'.format(row[0], row[1], row[2], row[3]))
con.close()
When run from within the library file, it returns proper results as:
1 : Star Wars, Comedy, 2018-11-15 12:23:28
2 : Titanic, Drama, 2018-11-15 12:28:55
3 : Cars, Family, 2018-11-15 12:29:18
4 : Christmas Vacation, Holiday, 2018-11-15 12:37:59
6 : Cinderella, Family, 2018-11-15 12:43:13
Process finished with exit code 0
When called via an external file, it returns the results twice:
try:
pydvd_utils.query_all()
except Exception as e:
print(e)
1 : Star Wars, Comedy, 2018-11-15 12:23:28
2 : Titanic, Drama, 2018-11-15 12:28:55
3 : Cars, Family, 2018-11-15 12:29:18
4 : Christmas Vacation, Holiday, 2018-11-15 12:37:59
6 : Cinderella, Family, 2018-11-15 12:43:13
1 : Star Wars, Comedy, 2018-11-15 12:23:28
2 : Titanic, Drama, 2018-11-15 12:28:55
3 : Cars, Family, 2018-11-15 12:29:18
4 : Christmas Vacation, Holiday, 2018-11-15 12:37:59
6 : Cinderella, Family, 2018-11-15 12:43:13
Process finished with exit code 0
The external file, query_all.py, is simple, only calling the function:
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import pydvd_utils
try:
pydvd_utils.query_all()
except Exception as e:
print(e)
python python-3.x sqlite3
asked Nov 15 '18 at 18:13
86753098675309
45117
The external file must be callingquery_all()twice.
– John Gordon
Nov 15 '18 at 18:20
The external file is just a single call to that function. Its full contents are:#!/usr/bin/env python3 # -*- coding: utf-8 -*- import pydvd_utils try: pydvd_utils.query_all() except Exception as e: print(e)
– 8675309
Nov 15 '18 at 18:22
Then the external file itself is being called twice. Show us how it's called.
– John Gordon
Nov 15 '18 at 18:24
I'm calling the file directly from the command prompt viaD:OneDrivesourcepydvd>python query_all.py
– 8675309
Nov 15 '18 at 18:36
Edit your Question and show the__main__entry point.
– stovfl
Nov 15 '18 at 18:45
|
show 4 more comments
I am working on a personal project to learn using SQLite3 with Python by creating a dvd inventory application. I have had some success with my SQLite related functions, which are in a library file, and intended to be called from other portions of the application.
I am running into a problem with extraneous data being returned in a query, in this case, the same data twice.
I am testing a function that simply queries a table, and returns all its values. If I run that function from a call within the library file it resides in, it works properly, but if I call it from an external file that imports the library file, it returns the data twice, and I am unsure why.
The function is as follows:
def query_all():
con = db_connect()
cur = con.cursor()
cur.execute('''SELECT film_id, film_name, film_genre, date_added FROM
film_inv''')
all_rows = cur.fetchall()
for row in all_rows:
print('0 : 1, 2, 3'.format(row[0], row[1], row[2], row[3]))
con.close()
When run from within the library file, it returns proper results as:
1 : Star Wars, Comedy, 2018-11-15 12:23:28
2 : Titanic, Drama, 2018-11-15 12:28:55
3 : Cars, Family, 2018-11-15 12:29:18
4 : Christmas Vacation, Holiday, 2018-11-15 12:37:59
6 : Cinderella, Family, 2018-11-15 12:43:13
Process finished with exit code 0
When called via an external file, it returns the results twice:
try:
pydvd_utils.query_all()
except Exception as e:
print(e)
1 : Star Wars, Comedy, 2018-11-15 12:23:28
2 : Titanic, Drama, 2018-11-15 12:28:55
3 : Cars, Family, 2018-11-15 12:29:18
4 : Christmas Vacation, Holiday, 2018-11-15 12:37:59
6 : Cinderella, Family, 2018-11-15 12:43:13
1 : Star Wars, Comedy, 2018-11-15 12:23:28
2 : Titanic, Drama, 2018-11-15 12:28:55
3 : Cars, Family, 2018-11-15 12:29:18
4 : Christmas Vacation, Holiday, 2018-11-15 12:37:59
6 : Cinderella, Family, 2018-11-15 12:43:13
Process finished with exit code 0
The external file, query_all.py, is simple, only calling the function:
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import pydvd_utils
try:
pydvd_utils.query_all()
except Exception as e:
print(e)
python python-3.x sqlite3
asked Nov 15 '18 at 18:13
86753098675309
45117
I am working on a personal project to learn using SQLite3 with Python by creating a dvd inventory application. I have had some success with my SQLite related functions, which are in a library file, and intended to be called from other portions of the application.
I am running into a problem with extraneous data being returned in a query, in this case, the same data twice.
I am testing a function that simply queries a table, and returns all its values. If I run that function from a call within the library file it resides in, it works properly, but if I call it from an external file that imports the library file, it returns the data twice, and I am unsure why.
The function is as follows:
def query_all():
con = db_connect()
cur = con.cursor()
cur.execute('''SELECT film_id, film_name, film_genre, date_added FROM
film_inv''')
all_rows = cur.fetchall()
for row in all_rows:
print('0 : 1, 2, 3'.format(row[0], row[1], row[2], row[3]))
con.close()
When run from within the library file, it returns proper results as:
1 : Star Wars, Comedy, 2018-11-15 12:23:28
2 : Titanic, Drama, 2018-11-15 12:28:55
3 : Cars, Family, 2018-11-15 12:29:18
4 : Christmas Vacation, Holiday, 2018-11-15 12:37:59
6 : Cinderella, Family, 2018-11-15 12:43:13
Process finished with exit code 0
When called via an external file, it returns the results twice:
try:
pydvd_utils.query_all()
except Exception as e:
print(e)
1 : Star Wars, Comedy, 2018-11-15 12:23:28
2 : Titanic, Drama, 2018-11-15 12:28:55
3 : Cars, Family, 2018-11-15 12:29:18
4 : Christmas Vacation, Holiday, 2018-11-15 12:37:59
6 : Cinderella, Family, 2018-11-15 12:43:13
1 : Star Wars, Comedy, 2018-11-15 12:23:28
2 : Titanic, Drama, 2018-11-15 12:28:55
3 : Cars, Family, 2018-11-15 12:29:18
4 : Christmas Vacation, Holiday, 2018-11-15 12:37:59
6 : Cinderella, Family, 2018-11-15 12:43:13
Process finished with exit code 0
The external file, query_all.py, is simple, only calling the function:
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import pydvd_utils
try:
pydvd_utils.query_all()
except Exception as e:
print(e)
python python-3.x sqlite3
python python-3.x sqlite3
asked Nov 15 '18 at 18:13
86753098675309
45117
asked Nov 15 '18 at 18:13
86753098675309
45117
edited Nov 15 '18 at 19:10
8675309
asked Nov 15 '18 at 18:13
86753098675309
45117
asked Nov 15 '18 at 18:13
86753098675309
45117
asked Nov 15 '18 at 18:13
86753098675309
45117
45117
The external file must be callingquery_all()twice.
– John Gordon
Nov 15 '18 at 18:20
The external file is just a single call to that function. Its full contents are:#!/usr/bin/env python3 # -*- coding: utf-8 -*- import pydvd_utils try: pydvd_utils.query_all() except Exception as e: print(e)
– 8675309
Nov 15 '18 at 18:22
Then the external file itself is being called twice. Show us how it's called.
– John Gordon
Nov 15 '18 at 18:24
I'm calling the file directly from the command prompt viaD:OneDrivesourcepydvd>python query_all.py
– 8675309
Nov 15 '18 at 18:36
Edit your Question and show the__main__entry point.
– stovfl
Nov 15 '18 at 18:45
|
show 4 more comments
The external file must be callingquery_all()twice.
– John Gordon
Nov 15 '18 at 18:20
The external file is just a single call to that function. Its full contents are:#!/usr/bin/env python3 # -*- coding: utf-8 -*- import pydvd_utils try: pydvd_utils.query_all() except Exception as e: print(e)
– 8675309
Nov 15 '18 at 18:22
Then the external file itself is being called twice. Show us how it's called.
– John Gordon
Nov 15 '18 at 18:24
I'm calling the file directly from the command prompt viaD:OneDrivesourcepydvd>python query_all.py
– 8675309
Nov 15 '18 at 18:36
Edit your Question and show the__main__entry point.
– stovfl
Nov 15 '18 at 18:45
The external file must be calling
query_all() twice.– John Gordon
Nov 15 '18 at 18:20
The external file must be calling
query_all() twice.– John Gordon
Nov 15 '18 at 18:20
The external file is just a single call to that function. Its full contents are:
#!/usr/bin/env python3 # -*- coding: utf-8 -*- import pydvd_utils try: pydvd_utils.query_all() except Exception as e: print(e)– 8675309
Nov 15 '18 at 18:22
The external file is just a single call to that function. Its full contents are:
#!/usr/bin/env python3 # -*- coding: utf-8 -*- import pydvd_utils try: pydvd_utils.query_all() except Exception as e: print(e)– 8675309
Nov 15 '18 at 18:22
Then the external file itself is being called twice. Show us how it's called.
– John Gordon
Nov 15 '18 at 18:24
Then the external file itself is being called twice. Show us how it's called.
– John Gordon
Nov 15 '18 at 18:24
I'm calling the file directly from the command prompt via
D:OneDrivesourcepydvd>python query_all.py– 8675309
Nov 15 '18 at 18:36
I'm calling the file directly from the command prompt via
D:OneDrivesourcepydvd>python query_all.py– 8675309
Nov 15 '18 at 18:36
Edit your Question and show the
__main__ entry point.– stovfl
Nov 15 '18 at 18:45
Edit your Question and show the
__main__ entry point.– stovfl
Nov 15 '18 at 18:45
|
show 4 more comments
1 Answer
1
active
oldest
votes
Face palm moment!
The function was definitely running twice, due to a PEBKAC error.
I had a call of the function I was using for direct testing within the library, and it wasn't commented out. Calling the function externally was running the function, and then the call to the function that both existed in the library file.
Commenting out the test call to the function in the library resolved the problem.
Thank you to everyone for the direction.
answered Nov 15 '18 at 19:13
86753098675309
45117
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
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oldest
votes
active
oldest
votes
Face palm moment!
The function was definitely running twice, due to a PEBKAC error.
I had a call of the function I was using for direct testing within the library, and it wasn't commented out. Calling the function externally was running the function, and then the call to the function that both existed in the library file.
Commenting out the test call to the function in the library resolved the problem.
Thank you to everyone for the direction.
answered Nov 15 '18 at 19:13
86753098675309
45117
add a comment |
Face palm moment!
The function was definitely running twice, due to a PEBKAC error.
I had a call of the function I was using for direct testing within the library, and it wasn't commented out. Calling the function externally was running the function, and then the call to the function that both existed in the library file.
Commenting out the test call to the function in the library resolved the problem.
Thank you to everyone for the direction.
answered Nov 15 '18 at 19:13
86753098675309
45117
add a comment |
Face palm moment!
The function was definitely running twice, due to a PEBKAC error.
I had a call of the function I was using for direct testing within the library, and it wasn't commented out. Calling the function externally was running the function, and then the call to the function that both existed in the library file.
Commenting out the test call to the function in the library resolved the problem.
Thank you to everyone for the direction.
answered Nov 15 '18 at 19:13
86753098675309
45117
Face palm moment!
The function was definitely running twice, due to a PEBKAC error.
I had a call of the function I was using for direct testing within the library, and it wasn't commented out. Calling the function externally was running the function, and then the call to the function that both existed in the library file.
Commenting out the test call to the function in the library resolved the problem.
Thank you to everyone for the direction.
answered Nov 15 '18 at 19:13
86753098675309
45117
answered Nov 15 '18 at 19:13
86753098675309
45117
answered Nov 15 '18 at 19:13
86753098675309
45117
answered Nov 15 '18 at 19:13
86753098675309
45117
45117
add a comment |
add a comment |
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The external file must be calling
query_all()twice.– John Gordon
Nov 15 '18 at 18:20
The external file is just a single call to that function. Its full contents are:
#!/usr/bin/env python3 # -*- coding: utf-8 -*- import pydvd_utils try: pydvd_utils.query_all() except Exception as e: print(e)– 8675309
Nov 15 '18 at 18:22
Then the external file itself is being called twice. Show us how it's called.
– John Gordon
Nov 15 '18 at 18:24
I'm calling the file directly from the command prompt via
D:OneDrivesourcepydvd>python query_all.py– 8675309
Nov 15 '18 at 18:36
Edit your Question and show the
__main__entry point.– stovfl
Nov 15 '18 at 18:45