大约有 40,000 项符合查询结果（耗时：0.0741秒） [XML]
Evaluating a mathematical expression in a string
...p://pyparsing.wikispaces.com/message/view/home/15549426
'''
__note__ = '''
All I've done is rewrap Paul McGuire's fourFn.py as a class, so I can use it
more easily in other places.
'''
class NumericStringParser(object):
'''
Most of this code comes from the fourFn.py pyparsing example
...
Create Directory if it doesn't exist with Ruby
... By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy
...
How to remove all of the data in a table using Django
...
Inside a manager:
def delete_everything(self):
Reporter.objects.all().delete()
def drop_table(self):
cursor = connection.cursor()
table_name = self.model._meta.db_table
sql = "DROP TABLE %s;" % (table_name, )
cursor.execute(sql)
...
“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
... can be used to detect if a variable has been already initialized. Additionally and more ideal is the solution of empty() since it does not generate a warning or error message if the variable is not initialized.
From PHP documentation:
No warning is generated if the variable does not exist. T...
Guid is all 0's (zeros)?
I'm testing out some WCF services that send objects with Guids back and forth. In my web app test code, I'm doing the following:
...
Replace selector images programmatically
... By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy
...
What's the difference between a Python module and a Python package?
...stem in the reference documentation: It’s important to keep in mind that all packages are modules.
– Martijn Pieters♦
Apr 23 '18 at 21:42
7
...
SASS - use variables across multiple files
I would like to keep one central .scss file that stores all SASS variable definitions for a project.
6 Answers
...
Devise form within a different controller
... By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy
...
Can't pickle when using multiprocessing Pool.map()
...nsider it "easy" or not;-) is to add the infrastructure to your program to allow such methods to be pickled, registering it with the copy_reg standard library method.
For example, Steven Bethard's contribution to this thread (towards the end of the thread) shows one perfectly workable approach to a...