Even though they are equivalent, I think there is a pretty good argument that the second form import matplotlib.pyplot as plt is objectively more readable: It is generally customary to use import matplotlib.pyplot as plt and suggested in the matplotlib documentation (see http://matplotlib.org/users/pyplot_tutorial.html etc…) so this will be more familiar to most readers. import matplotlib.pyplot … Read more
i use mac terminal to check my package: i can find all packages include pandas but when i it told me: ModuleNotFoundError: No module named ‘pandas’ by the way, i have python2 and python3 in my mac, they are not the same directory,i suspect python didn’t find the path of pandas
The most obvious way to do this would be to print to a file object: However, redirecting stdout also works for me. It is probably fine for a one-off script such as this: Since Python 3.4 there’s a simple context manager available to do this in the standard library: Redirecting externally from the shell itself … Read more
It’s a function which is a member of a class: Simple as that! (There are also some alternative kinds of method, allowing you to control the relationship between the class and the function. But I’m guessing from your question that you’re not asking about that, but rather just the basics.)
I am working on the letter distribution problem from HP code wars 2012. I keep getting an error message that says “invalid character in identifier”. What does this mean and how can it be fixed? Here is the page with the information.
here i wanna run this code for try neural network with python : at the beginning it must install keras, and success. but when try to run the code at the first the error is : ImportError : No Moduled Name “tensorflow” then i install using pip : pip install tensorflow after installation i try … Read more
How do I rectify the error “unexpected indent” in python?
I have finally got the patience to use Python again and I am trying some math stuff to get back in, but I am now trying to make a Python script and it came up with the “float’ object is not subscriptable’ error. Again, I have just got back into Python and I have no … Read more
It is a string formatting syntax (which it borrows from C). Please see “PyFormat”: Python supports formatting values into strings. Although this can include very complicated expressions, the most basic usage is to insert values into a string with the %s placeholder. Edit: Here is a really simple example: The %s token allows me to … Read more
You can use this syntax: Also, inverse operator: It works fine for lists, tuples, sets and dicts (check keys). Note that this is an O(n) operation in lists and tuples, but an O(1) operation in sets and dicts.