CODEWITHSUNDEEP
pythonfor-loopsyntax-error
Steve Edwards
Steve Edwards

Reputation: 113

Populating an array - Getting syntax error on a 'for' statement

I'm trying to figure out why I'm getting a syntax error when I try using this program. This code worked fine when I was using populating lists, however, I've decided to use an array as I can manipulate the data to my liking.

Here is the code:

#Frame Creation

frames=[]

for n in range (0, (workingframes*archnodes*3)):
    frames.append( )


frames = array(frames)                                    #generates array
frames = reshape(frames, ((archnodes*3),workingframes)    #reshapes array




#Frame Population

for f in range (0, workingframes):

    if f<=(workingframes/2):

        for x in range (0, (archnodes)):
            frames[(archnodes*3)].insert((archnodes*3), (archstartred[x]))
            frames[(archnodes*3)+1].insert(((archnodes*3)+1),(archstartgrn[x]))
            frames[(archnodes*3)+2].insert(((archnodes*3)+2),(archstartblu[x]))

        for y in range (0, nodesperframe):
            archstartred.pop()
            archstartgrn.pop()
            archstartblu.pop()
            archstartred.insert(0, backred)
            archstartgrn.insert(0, backgrn)
            archstartblu.insert(0, backblu)

    else:
        for y in range (0, nodesperframe):
            archstartred.pop(0)
            archstartgrn.pop(0)
            archstartblu.pop(0)
            archstartred.append(backred)
            archstartgrn.append(backgrn)
            archstartblu.append(backblu)

        for x in range (0, (archnodes)):
            frames[(archnodes*3)].insert((archnodes*3), (archstartred[x]))
            frames[(archnodes*3)+1].insert(((archnodes*3)+1),(archstartgrn[x]))
            frames[(archnodes*3)+2].insert(((archnodes*3)+2),(archstartblu[x]))

I keep getting this error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "backandforth3.py", line 99
    for f in range (0, workingframes):
                                     ^
SyntaxError: invalid syntax

I have tried using different values for 'f'. I've tried removing the colons (which leads to other syntax errors.) What am I missing?

Upvotes: 0

Views: 563

Answers (2)

Andrew Gorcester
Andrew Gorcester

Reputation: 19983

The problem is here:

frames = reshape(frames, ((archnodes*3),workingframes)    #reshapes array

You have three ( and two ). Python thinks that the reshape() call isn't over at the end of the line, so it proceeds down the file until it hits the for and :, which don't make sense inside a function call.

Upvotes: 4

applicative_functor
applicative_functor

Reputation: 4986

Missing parens:

frames = reshape(frames, ((archnodes*3),workingframes)

Upvotes: 2

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