CODEWITHSUNDEEP
pythonraspberry-piled
jointtech
jointtech

Reputation: 1

Variables in Python functions on RPi

sudo python yantest.py 255,255,0

who = sys.argv[1]
print sys.argv[1]
print who
print 'Number of arguments:', len(sys.argv), 'arguments.'
print 'Argument List:', str(sys.argv)
yanon(strip, Color(who))

output from above is 

255,255,0

255,255,0

Number of arguments: 2 arguments.

Argument List: ['yantest.py', '255,255,0']

Traceback (most recent call last):
  File "yantest.py", line 46, in <module>
    yanon(strip, Color(who))
TypeError: Color() takes at least 3 arguments (1 given)
Segmentation fault

How do I use the variable "who" inside the Color function?

Ive tried ('who'), ("who") neither of which work either.

Upvotes: 0

Views: 106

Answers (2)

ChaosPredictor
ChaosPredictor

Reputation: 4071

who is a string. I don't know what type of variable color should get but probably int. You should split who string to 3 sub strings by "," and convert each one to int or whatever it should be.

Upvotes: 0

LNT
LNT

Reputation: 124

TypeError: Color() takes at least 3 arguments (1 given)

Error means that you should pass 3 arguments but you only pass 1 argument. Here are two ways to implement:

color_r = sys.argv[1]
color_g = sys.argv[2]
color_b = sys.argv[3]
yanon(strip, Color(color_r, color_g, color_b))

Run script as:

sudo python yantest.py 255 255 0

OR

who = sys.argv[1].split(',')
yanon(strip, Color(who[0], who[1], who[2]))

Run script as:

sudo python yantest.py 255,255,0

And you should care about the type of argument!

Upvotes: 0

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