Syntax for Doubling a number

[ksp_802]

Hello,

having trouble with some coding:

def double_num(number): 
    # what code is needed to double the contents of the variable number? 

print(double_num(21))

Below is what I am writing but I am getting a syntax error.

def double_num(number): 
    # what code is needed to double the contents of the variable number? 
    return # double_num(21)=21 * 2
number=21
double_num(21)=number * 2
# This line of code allows you to test your answer when you click the Run button
print(double_num(21))

Please help with this

deanhystad write Jan-12-2025, 03:33 AM:
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[deanhystad]

def double_num(number): 
    # what code is needed to double the contents of the variable number? 
    return number * 2

[ndc85430]

If I could ask, how have you been learning Python? A book (which one?) or something else?

[ksp_802]

If I could ask, how have you been learning Python? A book (which one?) or something else?

Starting on Codefinity. Do you recommend other avenues? Would appreciate any recommendations.