a, b = 0, 1 while b < 1000:  print(b, end=',')  a, b = b, a+b 1,1,2,3,5,8,13,21,34,55,89,144,233,377,610,987,

a, b = 0, 1 while b < 1000:  print(b, end=' ')  a, b = b, a+b 1 1 2 3 5 8 13 21 34 55 89 144 233 377 610 987 

print(...) print(value, ..., sep=' ', end='/n', file=sys.stdout, flush=False)  Prints the values to a stream, or to sys.stdout by default. Optional keyword arguments: file: a file-like object (stream); defaults to the current sys.stdout. sep: string inserted between values, default a space. end: string appended after the last value, default a newline. flush: whether to forcibly flush the stream.