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python can't pass arguements from a function to another function?

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python can't pass arguements from a function to another function?

 
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  #1
Aug 21st, 2009
Hi all. I'm working on a python file that will be included in a project I am working on. Unfortunately, I ran into some problems when it came to passing arguments from a function, to another function. Let me explain; I have two functions: dist and return_mouse_angle. dist returns the distance between two points, and return_mouse_angle returns the slope of two points...

python Syntax (Toggle Plain Text) 
  1. def dist(p1,p2):
  2.      # a^2 + b^2 = c^2
  3.      return math.sqrt( (p2[0]-p1[0])^2+(p2[1]-p1[1])^2 )
  4.  
  5. def return_mouse_angle(mouse_pos,object_pos):
  6.      radians = math.asin( dist(mouse_pos,object_pos)/
  7.                           dist(mouse_pos,[mouse_pos[0],object_pos[1]]) )
  8.      degress = math.degrees( radians )
  9.      print degrees

for example, when I run
python Syntax (Toggle Plain Text) 
  1. return_mouse_slope( [100,100],[154,129])

I get this error:

Python Syntax (Toggle Plain Text) 
  1. Traceback (most recent call last):
  2.   File "<pyshell#59>", line 1, in <module>
  3.     return_mouse_slope( [100,100],[154,129])
  4.   File "C:/Documents and Settings/Owner/Desktop/rewrite project warp/lib/maths.py", line 15, in return_mouse_slope
  5.     dist(mouse_pos,[mouse_pos[0],object_pos[1]]) )
  6. ValueError: math domain error

I'm not able to pass mouse_pos[0] and object_pos[1] to the dist function. Is python not able to pass arguments (in this case, a list) from a function to another function?
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Re: python can't pass arguements from a function to another function?

 
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  #2
Aug 21st, 2009
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Originally Posted by fallopiano View Post
Python Syntax (Toggle Plain Text) 
  1. Traceback (most recent call last):
  2.   File "<pyshell#59>", line 1, in <module>
  3.     return_mouse_slope( [100,100],[154,129])
  4.   File "C:/Documents and Settings/Owner/Desktop/rewrite project warp/lib/maths.py", line 15, in return_mouse_slope
  5.     dist(mouse_pos,[mouse_pos[0],object_pos[1]]) )
  6. ValueError: math domain error
I'm not able to pass mouse_pos[0] and object_pos[1] to the dist function. Is python not able to pass arguments (in this case, a list) from a function to another function?
Try to figure out how to use the dist function in the interpreter and then implement it inside your function. The ValueError is telling you that what you're trying to do is unsupported by dist.
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Re: python can't pass arguements from a function to another function?

 
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  #3
Aug 21st, 2009
but how do i do that? i tried putting the dist function in return_mouse_angle:
python Syntax (Toggle Plain Text) 
  1. def return_mouse_slope(mouse_pos,object_pos):
  2.      p1 = mouse_pos
  3.      p2 = object_pos
  4.      p3 = [mouse_pos[0],object_pos[1]]
  5.      # sin^-1 and distance formula
  6.      radians = math.asin( math.sqrt( (p2[0]-p1[0])^2+(p2[1]-p1[1])^2 )/
  7.                           math.sqrt( (p3[0]-p1[0])^2+(p3[1]-p1[1])^2 ) )
  8.  
  9.      degress = math.degrees( radians )
  10.      print degrees

but I still got
python Syntax (Toggle Plain Text) 
  1. Traceback (most recent call last):
  2.   File "<pyshell#16>", line 1, in <module>
  3.     return_mouse_slope([100,100],[50,150])
  4.   File "C:\Documents and Settings\Owner\Desktop\rewrite project warp\lib\maths.py", line 18, in return_mouse_slope
  5.     radians = math.asin( math.sqrt( (p2[0]-p1[0])^2+(p2[1]-p1[1])^2 )/
  6. ValueError: math domain error
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Re: python can't pass arguements from a function to another function?

 
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  #4
Aug 21st, 2009
Try this:
print(10^2)
print(10**2)
Last edited by sneekula; Aug 21st, 2009 at 5:18 pm.
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