CODEWITHSUNDEEP
pythonclass
Braden
Braden

Reputation: 759

Dynamically creating instances of a class using list of strings as variable names for instances

Lets say I want to produce multiple instances of a class (e.g. a Car class).

I have the variable names I need to use in a list:

cars = ['Mustang', 'Camaro', 'Challenger']

How can I loop through the cars list and create an instance of the Car class with the variable name being the string within the cars list.

Essentially doing the same as:

Mustang = Car()
Camaro = Car()
Challenger = Car()

I realise that dynamically creating variables is frowned upon, however I am using this to create instances of a class for each participant in a study, therefore I have their ID numbers in a list and want to use this ID number as the variable name for the class instance.

Upvotes: 0

Views: 49

Answers (1)

Mark
Mark

Reputation: 810

Try this hope it helps: https://repl.it/OAQv

class Car:
    pass

module_name = __import__('sys').modules[__name__]
setattr(module_name, 'Mustang', Car())
setattr(module_name, 'Camaro', Car())
setattr(module_name, 'Challenger', Car())

print(Mustang)
print(Camaro)
print(Challenger)

to dynamically create instance of class using list of strings

class Car:
    pass

module_name = __import__('sys').modules[__name__]
cars = ['Mustang', 'Camaro', 'Challenger']
for car in cars:
    setattr(module_name, car, Car())

print(Mustang)
print(Camaro)
print(Challenger)

Upvotes: 1

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