Help To Get Started

[HansieB]

Dear member,

In ..\python\python 313-32\ I created cAdd.py (See first attachment)

With IDLE I tryed to run cAdd.py, but I got a NameError : cAdd is not defined. (See second attachment)

How do I solve the NameError?

Yours faithfully.

HansieB

[buran]

You are trying to call the function cAdd in the interactive python shell. Where it is not defined, unlike names u and v, which you define on the first two lines.
If you want to run the cAdd,py, go to File->Open and open the module. Then Run->Run Module
Note that in this case you will get NameError for a and b, which are not defined in the module, before line cAdd(a, b)

[HansieB]

Note that in this case you will get NameError for a and b, which are not defined in the module, before line cAdd(a, b)

Dear buran,
Thank you for your answer.

Where can I define a (and b)?

Regards.

HansieB

[buran]

Something like

# define the function
def cAdd(a, b): # this name is not PEP8 compliant
    return [a[0] + b[0], a[1] + b[1]] 

# define names (variables) you will pass as aruments
u = [1, 2]
v = [3, 4]

# call the function, assign the return value to name result
result = cAdd(u, v)

# print result
print(result)

Note there are plenty of other ways to do this, e.g.

# define names (variables) you will pass as arguments
u = [1, 2]
v = [3, 4]

# use list comprehension to iterate over zipped lists, assign the list to name result
result = [a + b for a, b in zip(u, v)]

# print result
print(result)

[HansieB]

You are trying to call the function cAdd in the interactive python shell. Where it is not defined, unlike names u and v, which you define on the first two lines.
If you want to run the cAdd,py, go to File->Open and open the module. Then Run->Run Module
Note that in this case you will get NameError for a and b, which are not defined in the module, before line cAdd(a, b)

[HansieB]

Thank you buran!

Have a nice weekend!

HansieB