[英]How do I import a text file into a SQLite3 table using python
我目前有電影的txt文件,其中包含movieID,電影名稱和類型。 例:
1,Toy Story (1995),Animation|Children's|Comedy
2,Jumanji (1995),Adventure|Children's|Fantasy
3,Grumpier Old Men (1995),Comedy|Romance
4,Waiting to Exhale (1995),Comedy|Drama
5,Father of the Bride Part II (1995),Comedy
我正在嘗試將此文件導入到使用Python創建的SQLite3表中:
import sqlite3
conn = sqlite3.connect('CSC 452 Final.db')
c=conn.cursor()
c.execute('''DROP TABLE IF EXISTS temp_movie''')
print("Table temp_movie dropped.")
c.execute('''CREATE TABLE temp_movie (
MovieID NUMERIC (5),
movie_title_year VARCHAR2 (255),
movie_categories VARCHAR2 (255),
CONSTRAINT movies_movieID_PK PRIMARY KEY (
MovieID
))''')
print("Table temp_movie successfully created.")
conn.commit()
將分隔符為','的文本文件導入此數據庫的最佳方法是什么?
你可以在閱讀txt
文件和分裂的,
:
file_data = [i.strip('\n').split(',') for i in open('filename.txt')]
new_data = [[int(a), *b] for a, *b in file_data] #convert string id to integer
conn = sqlite3.connect('CSC 452 Final.db')
c = conn.cursor()
c.executemany('INSERT INTO temp_movie VALUES (?, ?, ?)', new_data)
我本來可以使用python csv模塊來做到這一點的:
with open(<txt file>,'rb') as f:
dic_reader = csv.DictReader(f)
value_list = [(each_row['MovieID'], each_row['movie_title_year'], each_row['movie_title_year']) for each_row in dic_reader]
c.executemany("INSERT INTO t (MovieID, movie_title_year, movie_title_year) VALUES (?, ?);", value_list)
conn.commit()
conn.close()
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