How to print without a newline or space

Consider these examples using print in Python:

>>> for i in range(4): print('.')
.
.
.
.
>>> print('.', '.', '.', '.')
. . . .

Either a newline or a space is added between each value. How can I avoid that, so that the output is .... instead? In other words, how can I "append" strings to the standard output stream?