python overwrite previous line

Question

how do you overwrite the previous print in python 2.7? I am making a simple program to calculate pi. here is the code:

o = 0
hpi = 1.0
i = 1
print \"pi calcu         


        

Answer 1

Check out this answer. Basically \r works fine, but you have to make sure you print without the newline characters.

cnt = 0
print str(cnt)
while True:
    cnt += 1
    print "\r" + str(cnt)

This won't work because you print a new line every time, and \r just goes back to the previous newline.

Adding a comma to the print statement will prevent it from printing a newline, so \b will go back to the beginning of the line you just wrote, and you can write over it.

cnt = 0
print str(cnt),
while True:
    cnt += 1
    print "\r" + str(cnt),