List as an argument in class?

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How do we pass a list as an argument of a python class?

class My_Class:
    def __init__(self, att, mylist[]):
        self.att=att
        self.mylist = mylist[]

You don't need to specify that it is a list. Python is a dynamically and strongly typed language.

class My_Class:
    def __init__(self, att, mylist):
        self.att = att
        self.mylist = mylist

Trying to pass list of variable in class and function in object oriented , in this line: def __init__(self,details):. you made the init function take a parameter (details), but here: pdetails = Mydetails(). you arent giving it a  Passing a list as an argument actually passes a reference to the list, not a copy of the list. Since lists are mutable, changes made to the elements referenced by the parameter change the same list that the argument is referencing. For example, the function below takes a list as an argument and multiplies each element in the list by 2:

There's nothing to it, really. In Python we do not need to declare the type of parameters:

class My_Class:
    def __init__(self, att, mylist):
        self.att = att
        self.mylist = mylist

10.18. Using Lists as Parameters, Functions which take lists as arguments and change them during execution are Passing a list as an argument actually passes a reference to the list, not a copy  ArrayList as an argument to another class how do you pass arraylists as arguments to another class, and how does the method/ class accept this arraylist for use. Use varibles from another class. Use varibles from another class **I have two classes. class 1:** public class askfigures extends JFrame { method from class1: public void in another class . another class : public class Askvalues extends JFrame.

You simply pass a reference to the list

class My_Class:
def __init__( self, att, mylist ):
    self.att=att
    self.mylist = mylist

Python Passing a List as an Argument, You can send any data types of argument to a function (string, number, list, dictionary etc.), and it will be treated as the same data type inside the function. E.g. if  Pass a list to a class python - Stack Overflow. I have this simple class:class revs: def __init__(self, rev, us, accs = []): self.rev = rev self.us = us self.accs = accsAnd i have this piece of code to asign value Stack Overflow. Products. Customers.

Passing Information to a Method or a Constructor (The Java , Note: Parameters refers to the list of variables in a method declaration. Here's an example of a method that accepts an array as an argument. it from an array of Point objects (assume that Point is a class that represents an x, y coordinate):. Python passing list as argument. Ask Question Asked 10 years, 3 months ago. Active 3 years, 11 months ago. Viewed 82k times 23. 5. If i were to run this code:

9. Classes, In general, calling a method with a list of n arguments is equivalent to calling the corresponding function with an argument list that is created by  CreateReference(Argument, String) Creates a new argument that references the specified target argument using the specified referenced argument name. Equals(Object) Determines whether the specified object is equal to the current object. (Inherited from Object) Get(ActivityContext) Gets the value of the argument using the specified activity context.

28.12. inspect — Inspect live objects, For example, it can help you examine the contents of a class, retrieve the source code of a method, extract and format the argument list for a function, or get all  public static List < PHCRecord > listDataMC1 = new List < PHCRecord > (); public static List < MMORecord > listDataHC = new List < MMORecord > (); public static List < PHCSRecord > listDataMultiplan = new List < PHCSRecord > (); The MMORecord, PHCSRecord, PHCRecord are classes. Then I use it to pass to a Method.

Comments
  • Just get rid of all the []…!?
  • You just pass it - there's no special syntax...
  • You can leave off the square brackets [] in both your parameter list and the assignment statement. As long as the type of mylist is a list, it will be treated as a list.
  • @DatHydroGuy s/can/must/
  • On the off-chance that you are asking about type hinting, it would be def __init__(self, att, mylist: List[Any]) (assuming you have imported the names List and Any from the typing module).
  • The how do I print the list? print(instance.mylist)?
  • @Azazel, why would you think you should use instance? It looks like you would benefit from a Python tutorial. Start with the basics, which will cover things like variable names and types (so you won't make mistakes like mylist[]), then look for one that deals with object-oriented Python code.
  • by instance I meant instance of that My_Class.....something like: class1=My_Class('ABC', ['123','456','789'])