operationalerror | 易学教程

Django OperationalError: no such column: on pythonanywhere

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问题 First, I was able to fix the ImportError. I figured out that it was because the Django version of pythonanywhere is not updated, So I upgraded Django on pythonanywhere from 1.x.x to 2.0.9. The error came out like this: ImportError at / cannot import name 'path' django version: 1.x.x python version: 3.6.6 and, unfortunately, my app gave me another error: OperationalError at / no such column: blog_post.published_date Request Method: GET Request URL: http:// .pythonanywhere.com/ Django Version:

pymysql.err.OperationalError - Lost connection to MySQL server during query

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问题 I am using Python script to insert records into MySQL database table. The script fails with the following error message. MySQL version is 8.0.17 , Python version 3.6.5 (pymysql.err.OperationalError) (2013, 'Lost connection to MySQL server during query ([WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond)') (Background on this error at: http:/

pymysql.err.OperationalError - Lost connection to MySQL server during query

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OperationalError: no such module: fts4

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问题 Hi I´ve tried to run a fuzzymatcher code and the error below pops up: OperationalError: no such module: fts4 Any suggestions? Thanks in advance Edit: I've already tried downloading the sqlite zip from the website and saving it in DLLs files but it still does not work. Do I have to activate it somehow? I´m using Anaconda3 64 bit. Thanks 回答1: Confirm that the DLL files have been added in the correct place; if you are using Windows it will be C:\ProgramData\Anaconda3\DLLs . you can try to load

OperationalError: no such table on initial syncdb

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问题 I'm running syncdb to create an sqlite db. It was working until recently, and I don't see anything I've changed that would cause it to fail. Mostly I just changed some field names. I have the following in models.py: class GC_User(models.Model): first_name = models.CharField(max_length=50) last_name = models.CharField(max_length=50) email = models.EmailField() wp_userID = models.PositiveSmallIntegerField(unique=True) When I run syncdb after deleting the old db file, I get 150 lines of

python: sqlalchemy - how do I ensure connection not stale using new event system

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问题 I am using the sqlalchemy package in python. I have an operation that takes some time to execute after I perform an autoload on an existing table. This causes the following error when I attempt to use the connection: sqlalchemy.exc.OperationalError: (OperationalError) (2006, 'MySQL server has gone away') I have a simple utility function that performs an insert many: def insert_data(data_2_insert, table_name): engine = create_engine('mysql://blah:blah123@localhost/dbname') # Metadata is a

python: sqlalchemy - how do I ensure connection not stale using new event system

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I am using the sqlalchemy package in python. I have an operation that takes some time to execute after I perform an autoload on an existing table. This causes the following error when I attempt to use the connection: sqlalchemy.exc.OperationalError: (OperationalError) (2006, 'MySQL server has gone away') I have a simple utility function that performs an insert many: def insert_data(data_2_insert, table_name): engine = create_engine('mysql://blah:blah123@localhost/dbname') # Metadata is a Table catalog. metadata = MetaData() table = Table(table_name, metadata, autoload=True, autoload_with