The default end to a print() statement in python is '\n' (new line). As @sj95126 mentions in his comment, you will want to replace this ending with an empty string. Fortunately, Python gives a simple way of doing this:
print("Hi", end="")
pygame.time.wait(1000)
print(".", end="")
pygame.time.wait(500)
print(".", end="")
pygame.time.wait(500)
print(".")
The above code will print:
Hi...
Similarly, if you wanted to make every line end in a comma, you could do:
print("A", end=",")
pygame.time.wait(1000)
print("B", end=",")
pygame.time.wait(500)
print("C", end=",")
pygame.time.wait(500)
print("Bye")
Which would print:
A,B,C,Bye