matrix convert

[abbaszandi]

I want to convert a to b

a=[1,2,3,4,5,...,377]
b=

[Larz60+]

• set numrows = 7
  
• set rowindex = numrows - 1
  
• Create an empty 2D list with numrows sublists
  
• within a loop with range of 1 - 378:
  • append loop index to sublist [rowindex]
    
  • subtract 1 from rowindex - set to 0 if -1
    

Hint: you can create empty 2D list with: mylist = [[] for _ in range(numrows)]

[deanhystad]

def reshape(src, rows):
    columns = len(src) // rows
    return [src[c*rows-r] for r in range(1,rows+1) for c in range(1,columns+1)]

x = list(range(1, 378))
y = reshape(x, 13)