ValueError：int() 的文字无效，底数为 10："SOME STRING"

Question

当我在cmd中编写这个"python manage.py 迁移"时遇到问题" 我发现了这个错误

{ValueError: invalid literal for int() with base 10: 'SOME STRING'}

这是我的代码

class GameScore(models.Model):
FirstTeam = models.CharField(max_length=256, null=True)
SecondTeam = models.CharField(max_length=256, null=True)
first_team_score = models.IntegerField(default=0)
second_team_score = models.IntegerField(default=0)
game_date = models.DateTimeField(auto_now=True)
def __str__(self):
return '{} {} - {} {}'.format(self.FirstTeam, self.first_team_score, self.SecondTeam, self.second_team_score)

这是完整的回溯 https://i.stack.imgur.com/RM284.png

Apply all migrations: admin, auth, contenttypes, sessions, team
Running migrations:
Applying team.0007_auto_20180504_0343...Traceback (most recent call last):
File "manage.py", line 22, in <module>
execute_from_command_line(sys.argv)
File "C:UsershaythamDesktopteammanager_envlibsite-packagesdjangocoremanagement__init__.py", line 364, in execute_from_command_line
utility.execute()
File "C:UsershaythamDesktopteammanager_envlibsite-packagesdjangocoremanagement__init__.py", line 356, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:UsershaythamDesktopteammanager_envlibsite-packagesdjangocoremanagementbase.py", line 283, in run_from_argv
self.execute(*args, **cmd_options)
File "C:UsershaythamDesktopteammanager_envlibsite-packagesdjangocoremanagementbase.py", line 330, in execute
output = self.handle(*args, **options)
File "C:UsershaythamDesktopteammanager_envlibsite-packagesdjangocoremanagementcommandsmigrate.py", line 204, in handle
fake_initial=fake_initial,
File "C:UsershaythamDesktopteammanager_envlibsite-packagesdjangodbmigrationsexecutor.py", line 115, in migrate
state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
File "C:UsershaythamDesktopteammanager_envlibsite-packagesdjangodbmigrationsexecutor.py", line 145, in _migrate_all_forwards
state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
File "C:UsershaythamDesktopteammanager_envlibsite-packagesdjangodbmigrationsexecutor.py", line 244, in apply_migration
state = migration.apply(state, schema_editor)
File "C:UsershaythamDesktopteammanager_envlibsite-packagesdjangodbmigrationsmigration.py", line 129, in apply
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
File "C:UsershaythamDesktopteammanager_envlibsite-packagesdjangodbmigrationsoperationsfields.py", line 88, in database_forwards
field,
File "C:UsershaythamDesktopteammanager_envlibsite-packagesdjangodbbackendssqlite3schema.py", line 238, in add_field
self._remake_table(model, create_field=field)
File "C:UsershaythamDesktopteammanager_envlibsite-packagesdjangodbbackendssqlite3schema.py", line 113, in _remake_table
self.effective_default(create_field)
File "C:UsershaythamDesktopteammanager_envlibsite-packagesdjangodbbackendsbaseschema.py", line 229, in effective_default
default = field.get_db_prep_save(default, self.connection)
File "C:UsershaythamDesktopteammanager_envlibsite-packagesdjangodbmodelsfieldsrelated.py", line 963, in get_db_prep_save
return self.target_field.get_db_prep_save(value, connection=connection)
File "C:UsershaythamDesktopteammanager_envlibsite-packagesdjangodbmodelsfields__init__.py", line 770, in get_db_prep_save
prepared=False)
File "C:UsershaythamDesktopteammanager_envlibsite-packagesdjangodbmodelsfields__init__.py", line 958, in get_db_prep_value
value = self.get_prep_value(value)
File "C:UsershaythamDesktopteammanager_envlibsite-packagesdjangodbmodelsfields__init__.py", line 966, in get_prep_value
return int(value)
ValueError: invalid literal for int() with base 10: 'SOME STRING'

我不知道如何解决这个问题

Answer 1

将()视为一个列表。您需要数字来告知要提取哪个值。

return '{0} {1} - {2} {3}'.format(self.FirstTeam, self.first_team_score, self.SecondTeam, self.second_team_score)

如果你使用的是Python 3.6，你可以使用f’{self.whatever}’。