Off topic:converting rows into columns and vice versa

Question

[Ana]

I have a table file (including 11 million SNPs) and simply I want to convert rows into columns and column into rows. something like this, this is my unput

7 2 2 0 6  
0 2 0 0 0 
2 2 0 0 2

this is my desired output

7  0  2
2  2  2
2  0  0
0  0  0
6  0  2

normally I can do it so easily with R by using as.data.frame(t(df)), but it does not work with my data set maybe because file is so big! I could find this little Python script but does not work as well

with open('in.txt') as f:
  lis = [x.split() for x in f]

for x in zip(*lis):
  for y in x:
    print(y+'\t', end='')
  print('\n')

when I run it I get this error message

File "./row_to_column_transposition.py", line 8
    print(y+'\t', end='')
                     ^
SyntaxError: invalid syntax

I have tried other ways like awk but it does not give me my desired format! Can someone help me to fix it, I would appreciate that.