progress of loop indicator [duplicate]

Question

Possible Duplicate:
Python Progress Bar

I am running a for loop 10,000 times, but inside the loop there are a lot of calculations going on. I would like to print out a progress message to the console informing me how far along in the loop the program is how much longer I might have to wait.

the basic loop is

n = 10000 
for i in range(n):
   do_stuff_method()
   if(i%100 == 0):
      print (float(i)/n)*100,

This prints out a percentage message on the same line, but the problem is that the next thing that I print out is also printed out on the same screen. That, and since there are 99 prinouts, the console gets pretty wide and there is a lot of scrolling across.

What I would really like is for the console to print out the current % done, and an estimated time to finsih on the one line replace that which had been previously printed, so there doesn't have to be a lot scrolling.

Can this be done?

Cheers, Davy

In addition, a package exists for python to do this called... Progress Bar. Check it out from pypi: pypi.python.org/pypi/progressbar/2.2 — jmetz
– jmetz, Commented Jul 25, 2012 at 15:00

iblazevic · Accepted Answer · 2012-07-25 15:26:11Z

8

In your case you can do it simply by changing your print line to be:

print "\r{0}".format((float(i)/n)*100),

Or you can try it like this instead of print:

sys.stdout.write("\r{0}".format((float(i)/n)*100))
sys.stdout.flush()

edited Jul 25, 2012 at 15:26

answered Jul 25, 2012 at 15:01

iblazevic

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8 Comments

Davy Kavanagh Over a year ago

I just tested this. It prints each value on a new line.

iblazevic Over a year ago

you can try that other solution I put in the answer, both of them work for me

Davy Kavanagh Over a year ago

yep.I tried with and without the comma, and with and without the \r but they all just print either on the same line, or on a new line. I was looking for something that prints the new % value over the old % value.

Davy Kavanagh Over a year ago

I tried the second answer also. Still each value on new line. Weird. Could it be something to do with my console. It's the console inside eclispe on a mac if that makes a difference

iblazevic Over a year ago

can't really answer you on that but you can try running it from your regular terminal

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