Quantitative Trading Python Basics-Application of Yuanzu and Dictionary as Function Parameters

# 
Yuanzu as a function parameter def sum_numbers(*args):
    sum = 0
    for item in args:
        sum += item
    return sum

print(sum_numbers(1, 2, 3, 4, 5)) # The function parameter of sum_numbers is because it is a Yuanzu, Therefore, in theory, the number of parameters can be increased without limit;

 

# An example of calling 
Yuanzu and dictionary as parameters at the same time def show_list_dictionary(*args, **kwargs):
    print(args)
    print(kwargs)


show_list_dictionary(1, 2, 3, 4, name="roger", age=19) # Directly use the element of the ancestor and the dictionary as function parameters
 
foo_list = (1, 2, 3, 4, 5, 6, 7, 8)
roger_dictionary = {"name": "roger", "age": 25}
show_list_dictionary(*foo_list , **roger_dictionary) # Take the   ancestor and dictionary as function parameters, * symbol is used to unpack the list, ** symbol is used to unpack the dictionary