How do I convert a list into a string with spaces in Python?
How can I convert a list into a space-separated string in Python?
Python
How do I add custom field to Python log format string?
My current format string is:
What is the meaning of a forward slash “/” in a Python method signature, as shown by help(foo)?
In the signature returned interactively by help(foo), what is the meaning of a /? In [37]: help(object.__eq__) Help on wrapper_descriptor: __eq__(self, value, /) Return self==value. In [55]: help(object.__init__) Help on wrapper_descriptor: __init__(self, /, *args, **kwargs) Initialize self. See help(type(self)) for accurate signature. I thought it might be related to keyword-only arguments, but it’s not. When … Read more
Get inserted key before commit session
class Parent(db.Model): id = db.Column(db.Integer, primary_key=True) class Child(db.Model): id = db.Column(db.Integer, primary_key=True) parent_id = db.Column(db.Integer, db.ForeignKey('parent.id')) parent = Parent() db.session.add(parent) child = Child() child.parent_id = parent.id db.session.add(child) db.session.commit() I want to INSERT into both parent and child tables inside a session considering that the parent_id must be included in the child table. In the moment … Read more
Determine if variable is defined in Python
How do you know whether a variable has been set at a particular place in the code at runtime? This is not always obvious because (1) the variable could be conditionally set, and (2) the variable could be conditionally deleted. I’m looking for something like defined() in Perl or isset() in PHP or defined? in … Read more
How does python find a module file if the import statement only contains the filename?
Everywhere I see Python code importing modules using import sys or import mymodule
Python RuntimeWarning: overflow encountered in long scalars
I am new to programming. In my latest Python 2.7 project I encountered the following:
import win32api error in Python 2.6
When running python26 under windows OS (64bits)…..
I have got errors like:
function for switching frames in python, selenium
I’m looking for a function that makes it easier to switch between two frames. Right now, every time I need to switch between frames, I’m doing this by the following code:
How do you extract a url from a string using python?
For example: