Difference between modes a, a+, w, w+, and r+ in built-in open function?
In the python built-in open function, what is the exact difference between the modes w, a, w+, a+, and r+?
Python
How does Python 2 compare string and int? Why do lists compare as greater than numbers, and tuples greater than lists?
The following snippet is annotated with the output (as seen on ideone.com):
How to add a new column to an existing DataFrame?
I have the following indexed DataFrame with named columns and rows not- continuous numbers:
How to find all occurrences of an element in a list
index() will give the first occurrence of an item in a list. Is there a neat trick which returns all indices in a list for an element?
What is wrong with using a bare ‘except’?
Original close reason(s) were not resolved
Python 3: UnboundLocalError: local variable referenced before assignment
The following code gives the error UnboundLocalError: local variable ‘Var1’ referenced before assignment: Var1 = 1 Var2 = 0 def function(): if Var2 == 0 and Var1 > 0: print("Result One") elif Var2 == 1 and Var1 > 0: print("Result Two") elif Var1 < 1: print("Result Three") Var1 =- 1 function() How can I fix … Read more
How can you dynamically create variables?
I want to create variables dynamically in Python. Does anyone have any creative means of doing this? Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as advisements. If you found the post helpful (or not), … Read more
Does Python have “private” variables in classes?
I’m coming from the Java world and reading Bruce Eckels’ Python 3 Patterns, Recipes and Idioms.
How do I Pandas group-by to get sum?
I am using this data frame:
Why can a function modify some arguments as perceived by the caller, but not others?
I’m trying to understand Python’s approach to variable scope. In this example, why is f() able to alter the value of x, as perceived within main(), but not the value of n?