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How do I install an old version of Django on virtualenv?
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Daniel RosemanDaniel Roseman
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Insert new column into table in sqlite?
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685
You have two options.
First, you could simply add a new column with the following:
ALTER TABLE ...
“git pull” or “git merge” between master and development branches
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5 Answers
5
Active
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How to verify a method is called two times with mockito verify()
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536
Using the appropriate VerificationMode:
import static org.mockito.Mockito.atLeast;
import sta...
Rails migrations: Undo default setting for a column
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Rails 5+
def change
change_column_default( :table_name, :column_name, from: nil, to: false )
end
Rails 3 and Rails 4
def up
change_column_default( :table_name, :column_name, nil )
end
def down
change_column_default( :tab...
'str' object does not support item assignment in Python
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105
In Python, strings are immutable, so you can't change their characters in-place.
You can, howev...
How can I make gdb save the command history?
...This defaults to the value of the environment variable GDBHISTSIZE, or to 256 if this variable is not set. Non-numeric values of GDBHISTSIZE are ignored. If size is unlimited or if GDBHISTSIZE is either a negative number or the empty string, then the number of commands gdb keeps in the history list ...
Case Insensitive Flask-SQLAlchemy Query
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195
You can do it by using either the lower or upper functions in your filter:
from sqlalchemy impo...
String formatting in Python 3
... # '0.20'
"conversion rate: {:.2%}".format(self.goals / self.shots) # '20.45%'
"conversion rate: {:.0%}".format(self.goals / self.shots) # '20%'
"self: {!s}".format(self) # 'Player: Bob'
"self: {!r}".format(self) # '<__main__.Player instance at 0x00BF7260>'
"games: {:>3}".format(player1.g...