Python to print out status bar and percentage

Question

To implement a status bar like below                                 45                                60                               100    I want to this to be printed out to stdout  and keep refreshing it  not print to another line  How to do this

User · Answer

Here is something I have made using the solution by  Mark-Rushakoff  To adaptively adjust to the terminal width   from time import sleep import os import sys from math import ceil  l   list map int os popen  stty size   r   read   split     col   l 1  col   col - 6  for i in range col       sys stdout write   r       getStr      s          i      sys stdout write getStr ljust col        d       ceil  100 col  i        sys stdout flush       sleep 0 25  print

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To be pure python and not make system calls  from time import sleep  for i in range 21       spaces    quot   quot     20 - i      percentage   5 i     print f quot  r      i  spaces   percentage   quot   flush True  end  quot  quot       sleep 0 25

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Per Steven C  Howell s comment on Mark Rushakoff s answer j    i   1    n stdout write   r   stdout write    -20s   d           int 20 j   100 j   stdout flush    where i is the current item and n is the total number of items

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def printProgressBar value label       n bar   40  size of progress bar     max   100     j  value max     sys stdout write   r       bar          int n bar   j      bar   bar    -    int n bar    1-j        sys stdout write f quot  label ljust 10       bar  n bar s    int 100   j     quot       sys stdout flush     call   printProgressBar 30  quot IP quot    IP                                    ----------------------------  30

User · Answer

I came upon this thread today and after having tried out this solution from Mark Rushakoff  from time import sleep import sys  for i in range 21   sys stdout write   r     the exact output you re looking for  sys stdout write    -20s   d           i  5 i   sys stdout flush   sleep 0 25    I can say that this works fine on W7-64 with python 3 4 3 64-bit but only in the native console  However when using the built-in console of spyder 3 0 0dev  the line breaks are still again present  As this took me some time to figure out  I d like to report this observation here

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I found useful library tqdm  https   github com tqdm tqdm   previously  https   github com noamraph tqdm   It automatically estimates time of completion and can be used as iterator   Usage   import tqdm import time  for i in tqdm tqdm range 1000        time sleep 0 01        or other long operations   Results in        ------  450 1000  45   elapsed  00 04 left  00 05  99 15 iters sec    tqdm can wrap any iterable

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If you are developing a command line interface  I suggest you to take a look at click which is very nice    import click import time  for filename in range 3       with click progressbar range 100   fill char      empty char      as bar          for user in bar              time sleep 0 01    Here the output you get      python test py                                           100                                            100                                             27

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Try PyProg  PyProg is an open-source library for Python to create super customizable progress indicators  amp  bars   It is currently at version 1 0 2  it is hosted on Github and available on PyPI  Links down below   It is compatible with Python 3  amp  2 and it can also be used with Qt Console   It is really easy to use  The following code   import pyprog from time import sleep    Create Object prog   pyprog ProgressBar           total 34  bar length 26  complete symbol      not complete symbol      wrap bar prefix       wrap bar suffix       progress explain     progress loc pyprog ProgressBar PROGRESS LOC END    Update Progress Bar prog update    for i in range 34         Do something     sleep 0 1        Set current status     prog set stat i   1        Update Progress Bar again     prog update      Make the Progress Bar final prog end     will produce exactly what you want  even the bar length                                  45                               60                               100    For more options to customize the progress bar  go to the Github page of this website   I actually made PyProg because I needed a simple but super customizable progress bar library  You can easily install it with  pip install pyprog   PyProg Github  https   github com Bill13579 pyprog PyPI  https   pypi python org pypi pyprog

User · Answer

The   r  character  carriage return  resets the cursor to the beginning of the line and allows you to write over what was previously on the line   from time import sleep import sys  for i in range 21       sys stdout write   r         the exact output you re looking for      sys stdout write    -20s   d           i  5 i       sys stdout flush       sleep 0 25    I m not 100  sure if this is completely portable across all systems  but it works on Linux and OSX at the least

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Here you can use following code as a function   def drawProgressBar percent  barLen   20       sys stdout write   r       progress          for i in range barLen           if i  lt  int barLen   percent               progress                else              progress            sys stdout write     s     2f       progress  percent   100       sys stdout flush     With use of  format    def drawProgressBar percent  barLen   20         percent float from 0 to 1       sys stdout write   r       sys stdout write      lt         0f    format       int barLen   percent   barLen  percent   100       sys stdout flush

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This is quite a simple approach can be used with any loop      usr bin python for i in range 100001       s      i 5000       str i             print    r  s

User · Answer

There s a Python module that you can get from PyPI called progressbar that implements such functionality  If you don t mind adding a dependency  it s a good solution  Otherwise  go with one of the other answers   A simple example of how to use it   import progressbar from time import sleep bar   progressbar ProgressBar maxval 20        widgets  progressbar Bar                      progressbar Percentage     bar start   for i in xrange 20       bar update i 1      sleep 0 1  bar finish     To install it  you can use easy install progressbar  or pip install progressbar if you prefer pip

User · Answer

Using  Mark-Rushakoff answer  I worked out a simpler approach  no need to call the sys library  It works with Python 3  Tested in Windows   from time import sleep for i in range 21         the exact output you re looking for      print    r  -20s   d           i  5 i   end         sleep 0 25

User · Answer

You can use  r  carriage return    Demo   import sys total   10000000 point   total   100 increment   total   20 for i in xrange total       if i    5   point     0           sys stdout write   r            i   increment             total - i   increment           str i   point                 sys stdout flush

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Easiest is still  import sys total records   1000 for i in range  total records       sys stdout write   rUpdated record      str i      of     str total records       sys stdout flush     Key is to convert the integer type to string

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For Python 3 6 the following works for me to update the output inline  for current epoch in range 10       for current step  in range 100           print  quot Train epoch  s  Step  s quot     current epoch  current step   end  quot  r quot   print

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import progressbar import time    Function to create   def animated marker        widgets     Loading     progressbar Bar                 -    progressbar Percentage        bar   progressbar ProgressBar max value 200 widgets widgets  start               for i in range 200            time sleep 0 1          bar update i 1      bar finish      Driver s code  animated marker

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Building on some of the answers here and elsewhere  I ve written this simple function which displays a progress bar and elapsed estimated remaining time  Should work on most unix-based machines   import time import sys  percent   50 0 start   time time   draw progress bar percent  start    def draw progress bar percent  start  barLen 20   sys stdout write   r   progress      for i in range barLen       if i  lt  int barLen   percent           progress            else          progress         elapsedTime   time time   - start  estimatedRemaining   int elapsedTime    1 0 percent  - elapsedTime   if  percent    1 0       sys stdout write     s     1f   Elapsed   im  02is ETA  Done  n              progress  percent   100  int elapsedTime  60  int elapsedTime  60       sys stdout flush       return else      sys stdout write     s     1f   Elapsed   im  02is ETA   im 02is               progress  percent   100  int elapsedTime  60  int elapsedTime  60           estimatedRemaining 60  estimatedRemaining 60       sys stdout flush       return

User · Answer

As described in Mark Rushakoff s solution  you can output the carriage return character  sys stdout write   r    to reset the cursor to the beginning of the line   To generalize that solution  while also implementing Python 3 s f-Strings  you could use  from time import sleep import sys  n bar   50 iterable   range 33     for demo purposes n iter   len iterable  for i  item in enumerate iterable       j    i   1    n iter      sys stdout write   r       sys stdout write f         int n bar   j   n bar s    int 100   j          sys stdout flush        sleep 0 05          do something with  lt item gt  here

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Further improving  using a function as    import sys  def printProgressBar i max postText       n bar  10  size of progress bar     j  i max     sys stdout write   r       sys stdout write f         int n bar   j   n bar s    int 100   j      postText        sys stdout flush     calling example   total 33 for i in range total       printProgressBar i total  blah       sleep 0 05      output                                                         96   blah

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based on the above answers and other similar questions about CLI progress bar  I think I got a general common answer to all of them  Check it at https   stackoverflow com a 15860757 2254146  Here is a copy of the function  but modified to fit your style   import time  sys    update progress     Displays or updates a console progress bar    Accepts a float between 0 and 1  Any int will be converted to a float     A value under 0 represents a  halt      A value at 1 or bigger represents 100  def update progress progress       barLength   20   Modify this to change the length of the progress bar     status          if isinstance progress  int           progress   float progress      if not isinstance progress  float           progress   0         status    error  progress var must be float r n      if progress  lt  0          progress   0         status    Halt    r n      if progress  gt   1          progress   1         status    Done    r n      block   int round barLength progress       text     rPercent    0    1    2   format      block        barLength-block   progress 100  status      sys stdout write text      sys stdout flush     Looks like  Percent                         99 0

[python] Python to print out status bar and percentage

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