I created a function that generate a list but the list is empty in a new .py file - Printable Version +- Python Forum (https://python-forum.io) +-- Forum: Python Coding (https://python-forum.io/forum-7.html) +--- Forum: General Coding Help (https://python-forum.io/forum-8.html) +--- Thread: I created a function that generate a list but the list is empty in a new .py file (/thread-21751.html) |
I created a function that generate a list but the list is empty in a new .py file - mrhopeedu - Oct-12-2019 Hi guys, newbie to Python, pardon me if my question is subject doesn't make sense. I created a function to generate a random list of numbers and list is called a. def generaterandlist(): import random a=[] b=1 ##l = random.randint(0,10) ##print(l) for x in range(0,4): l = random.randint(0,10) a.append(l) print("These are the random list generated %s" % a) generaterandlist()I then opens up a new .py file and calls the function which generates the list: import generaterandlistfile print(a)but it says "NameError: name 'a' is not defined". I understand the reason is I have not defined the list 'a', but I thought since 'a' is defined in the function already, and then the list was created by the function as 'a', I would expect the random number s to already created and stored in 'a'. My intention is to use the function to create a list, and then call the function from another file and use the list to do something else.. Thanks guys, Hope the question make sense RE: I created a function that generate a list but the list is empty in a new .py file - Gribouillis - Oct-12-2019 Use this # generaterandlistfile.py import random def generaterandlist(): a=[] b=1 ##l = random.randint(0,10) ##print(l) for x in range(0,4): l = random.randint(0,10) a.append(l) return a # <---- See the return statement here?Then use it import generaterandlistfile as glf spam = glf.generaterandlist() print(spam) RE: I created a function that generate a list but the list is empty in a new .py file - mrhopeedu - Oct-12-2019 Thanks a lot Gribouillis, exactly what I was after. |