An implementation of pascal's triangle in python. Please compare this to my implementation in Scala.

pascal.py

def pascal(r, c):
  fac = lambda(num): (1 if (num < 1) else num*fac(num-1))
  return fac(r)/(fac(c)*fac(r-c))

def pascal2(r, c):
  return 1 if (c == 0 or c == r) else pascal2(r-1, c-1) + pascal2(r-1, c)

def triangle(totalRows, op):
  def draw(op):
    list = ""
    for row in range(totalRows+1):
      for space in range(totalRows-row):
        list += "  "
      for col in range(row+1):
        list += "{:^4}".format(op(row, col))
      list += "\n"
    return list
  return draw(op)

print(triangle(10, pascal))
print(triangle(10, pascal2))

'''
                     1  
                   1   1  
                 1   2   1  
               1   3   3   1  
             1   4   6   4   1  
           1   5   10  10  5   1  
         1   6   15  20  15  6   1  
       1   7   21  35  35  21  7   1  
     1   8   28  56  70  56  28  8   1  
   1   9   36  84 126 126  84  36  9   1  
 1   10  45 120 210 252 210 120  45  10  1  

                     1  
                   1   1  
                 1   2   1  
               1   3   3   1  
             1   4   6   4   1  
           1   5   10  10  5   1  
         1   6   15  20  15  6   1  
       1   7   21  35  35  21  7   1  
     1   8   28  56  70  56  28  8   1  
   1   9   36  84 126 126  84  36  9   1  
 1   10  45 120 210 252 210 120  45  10  1 
'''