Merging two different csv with python
$begingroup$
So I have one csv with 'films' in a database that have a unique ID
movie_title | ID | popularity
spider-man unique ID 4.2
captain marvel unique ID 9.9
Then about every week, I would like to update that popularity with a new one from another list of movies.
New movie list:
movie_title | ID | popularity
spider-man unique ID 5.5
captain marvel unique ID 7.4
How can I merge these two csv and output a new csv with only the value popularity updating? I have other values that also change over the week, but I just did popularity for simplicity. The unique ID must be in the new csv as well not only the changes; because, when I resubmit back to the database that is the only way that it will update with the ID.
The second list does not contain the ID's.
python
edited yesterday
Ethan
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asked yesterday
william validowilliam valido
42
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$begingroup$
So I have one csv with 'films' in a database that have a unique ID
movie_title | ID | popularity
spider-man unique ID 4.2
captain marvel unique ID 9.9
Then about every week, I would like to update that popularity with a new one from another list of movies.
New movie list:
movie_title | ID | popularity
spider-man unique ID 5.5
captain marvel unique ID 7.4
How can I merge these two csv and output a new csv with only the value popularity updating? I have other values that also change over the week, but I just did popularity for simplicity. The unique ID must be in the new csv as well not only the changes; because, when I resubmit back to the database that is the only way that it will update with the ID.
The second list does not contain the ID's.
python
edited yesterday
Ethan
695425
asked yesterday
william validowilliam valido
42
New contributor
william valido is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
So I have one csv with 'films' in a database that have a unique ID
movie_title | ID | popularity
spider-man unique ID 4.2
captain marvel unique ID 9.9
Then about every week, I would like to update that popularity with a new one from another list of movies.
New movie list:
movie_title | ID | popularity
spider-man unique ID 5.5
captain marvel unique ID 7.4
How can I merge these two csv and output a new csv with only the value popularity updating? I have other values that also change over the week, but I just did popularity for simplicity. The unique ID must be in the new csv as well not only the changes; because, when I resubmit back to the database that is the only way that it will update with the ID.
The second list does not contain the ID's.
python
edited yesterday
Ethan
695425
asked yesterday
william validowilliam valido
42
New contributor
william valido is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
So I have one csv with 'films' in a database that have a unique ID
movie_title | ID | popularity
spider-man unique ID 4.2
captain marvel unique ID 9.9
Then about every week, I would like to update that popularity with a new one from another list of movies.
New movie list:
movie_title | ID | popularity
spider-man unique ID 5.5
captain marvel unique ID 7.4
How can I merge these two csv and output a new csv with only the value popularity updating? I have other values that also change over the week, but I just did popularity for simplicity. The unique ID must be in the new csv as well not only the changes; because, when I resubmit back to the database that is the only way that it will update with the ID.
The second list does not contain the ID's.
python
python
edited yesterday
Ethan
695425
asked yesterday
william validowilliam valido
42
New contributor
william valido is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited yesterday
Ethan
695425
asked yesterday
william validowilliam valido
42
New contributor
william valido is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited yesterday
Ethan
695425
edited yesterday
Ethan
695425
edited yesterday
Ethan
695425
695425
asked yesterday
william validowilliam valido
42
New contributor
william valido is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked yesterday
william validowilliam valido
42
asked yesterday
william validowilliam valido
42
42
New contributor
william valido is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
william valido is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
william valido is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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1 Answer
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$begingroup$
What you need is a pandas.DataFrame.update.
Use pandas.read_csv to read the csv file to a Pandas DataFrame, then do the update. Once you have made the update you can use pandas.DataFrame.to_csv to convert it back to a csv.
answered yesterday
StevenTheDataGuyStevenTheDataGuy
964
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1 Answer
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1 Answer
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active
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$begingroup$
What you need is a pandas.DataFrame.update.
Use pandas.read_csv to read the csv file to a Pandas DataFrame, then do the update. Once you have made the update you can use pandas.DataFrame.to_csv to convert it back to a csv.
answered yesterday
StevenTheDataGuyStevenTheDataGuy
964
$endgroup$
add a comment |
$begingroup$
What you need is a pandas.DataFrame.update.
Use pandas.read_csv to read the csv file to a Pandas DataFrame, then do the update. Once you have made the update you can use pandas.DataFrame.to_csv to convert it back to a csv.
answered yesterday
StevenTheDataGuyStevenTheDataGuy
964
$endgroup$
add a comment |
$begingroup$
What you need is a pandas.DataFrame.update.
Use pandas.read_csv to read the csv file to a Pandas DataFrame, then do the update. Once you have made the update you can use pandas.DataFrame.to_csv to convert it back to a csv.
answered yesterday
StevenTheDataGuyStevenTheDataGuy
964
$endgroup$
What you need is a pandas.DataFrame.update.
Use pandas.read_csv to read the csv file to a Pandas DataFrame, then do the update. Once you have made the update you can use pandas.DataFrame.to_csv to convert it back to a csv.
answered yesterday
StevenTheDataGuyStevenTheDataGuy
964
answered yesterday
StevenTheDataGuyStevenTheDataGuy
964
answered yesterday
StevenTheDataGuyStevenTheDataGuy
964
answered yesterday
StevenTheDataGuyStevenTheDataGuy
964
964
add a comment |
add a comment |
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