input: Write a function to generate a Pascal triangle and print it for a given number of rows. If the number of rows is 0, the output should be empty.
  def PascalTriangle(n) : 
      if n == 0:
          return
  
      arr = [0 for i in range(n)] 
      for line in range(0, n) :
          for i in range (0, line + 1) : 
              if (i == 0 or i == line) : 
                  arr[i] = 1
              else : 
                  arr[i] = arr[i] + arr[i - 1]  
          for i in range (0, line + 1) : 
              print(arr[i], end =" ")  
          print()   
  
  assert PascalTriangle(5)==None
  assert PascalTriangle(0)==None
  assert PascalTriangle(3)==None
output: def PascalTriangle(n):
      if n == 0:
          return
  
      arr = [0 for i in range(n)] 
      for line in range(0, n):
          for i in range(0, line + 1): 
              if i == 0 or i == line: 
                  arr[i] = 1
              else: 
                  arr[i] = arr[i] + arr[i - 1]  
          for i in range(0, line + 1): 
              print(arr[i], end=" ")  
          print()