python Programming Glossary: readline

http://stackoverflow.com/questions/12419198/python-subprocess-readlines-hangs

subprocess readlines hangs The task I try to accomplish is to stream a ruby file.. os.fdopen master 'r' 0 while proc.poll is None data stdout.readline if data print data else break print This is never reached ruby_sleep.rb.. Exactly as the script should work. The problem is that readline hangs in the end and never quits. I never reach the last print...

How to get output from subprocess.Popen()

http://stackoverflow.com/questions/1388753/how-to-get-output-from-subprocess-popen

subp.PIPE stdin subp.PIPE while True data proc.stdout.readline #block wait print data time.sleep .1 The line proc.stdout.readline.. #block wait print data time.sleep .1 The line proc.stdout.readline was blocked so no data prints out. python linux subprocess.. I think you are looking for real time input and output. readline was blocked because the process is probably waiting on your..

file.tell() inconsistency

http://stackoverflow.com/questions/14145082/file-tell-inconsistency

get the wrong file index from tell however if I use readline I get the appropriate index for tell Input f open 'test.txt'.. for tell Input f open 'test.txt' 'r' while True line f.readline if line '' break print f.tell f.tell Output f.tell 103 f.tell.. ahead buffer combining next with other file methods like readline does not work right. However using seek to reposition the file..

How to make a python, command-line program autocomplete arbitrary things NOT interpreter

http://stackoverflow.com/questions/187621/how-to-make-a-python-command-line-program-autocomplete-arbitrary-things-not-int

autocomplete share improve this question Use Python's readline bindings. For example import readline def completer text state.. Use Python's readline bindings. For example import readline def completer text state options i for i in commands if i.startswith.. if state len options return options state else return None readline.parse_and_bind tab complete readline.set_completer completer..

How to capture Python interpreter's and/or CMD.EXE's output from a Python script?

http://stackoverflow.com/questions/24931/how-to-capture-python-interpreters-and-or-cmd-exes-output-from-a-python-script

subprocess.PIPE stderr subprocess.PIPE x process.stderr.readline y process.stdout.readline process.wait See the Python subprocess.. subprocess.PIPE x process.stderr.readline y process.stdout.readline process.wait See the Python subprocess module for information.. you'd do something like this import sys x sys.stderr.readline y sys.stdin.readline sys.stdin and sys.stdout are standard file..

Show default value for editing on Python input possible?

http://stackoverflow.com/questions/2533120/show-default-value-for-editing-on-python-input-possible

this functionality. If you're using Linux you can use the readline module to define an input function that uses a prefill value.. and advanced line editing def rlinput prompt prefill '' readline.set_startup_hook lambda readline.insert_text prefill try return.. rlinput prompt prefill '' readline.set_startup_hook lambda readline.insert_text prefill try return raw_input prompt finally readline.set_startup_hook..

read subprocess stdout line by line

http://stackoverflow.com/questions/2804543/read-subprocess-stdout-line-by-line

using python 2.6. You would think that using proc.stdout.xreadlines would work the same as py3k but it doesn't. Update 2 Here is.. 3.0 #for line in proc.stdout for line in iter proc.stdout.readline '' print line.rstrip python subprocess share improve this.. input before iterating over it. The solution is to use readline instead #filters output import subprocess proc subprocess.Popen..

Installing Python-2.7 on Ubuntu 10.4

http://stackoverflow.com/questions/4047212/installing-python-2-7-on-ubuntu-10-4

then recompile Python sudo aptitude install zlib1g dev libreadline6 dev libdb4.8 dev libncurses5 dev '#################################.. such as libexpat1 dev libdb4.8 dev libncurses5 dev and libreadline6 dev using the Python interpreter without readline is painful.. and libreadline6 dev using the Python interpreter without readline is painful . You'll then have to recompile Python to take advantage..

Intercepting stdout of a subprocess while it is running

http://stackoverflow.com/questions/527197/intercepting-stdout-of-a-subprocess-while-it-is-running

True #next_line proc.communicate 0 next_line proc.stdout.readline if next_line '' and proc.poll None break sys.stdout.write next_line.. next_line sys.stdout.flush print 'done' Why is readline and communicate waiting until the process is done running Is..

Tab completion in Python's raw_input()

http://stackoverflow.com/questions/5637124/tab-completion-in-pythons-raw-input

to get the effect of tab completion in python sure. import readline COMMANDS 'extra' 'extension' 'stuff' 'errors' 'email' 'foobar'.. cmd.startswith text if not state return cmd else state 1 readline.parse_and_bind tab complete readline.set_completer complete.. cmd else state 1 readline.parse_and_bind tab complete readline.set_completer complete raw_input 'Enter section name ' I am..

How can I print and display subprocess stdout and stderr output without distortion?

http://stackoverflow.com/questions/7729336/how-can-i-print-and-display-subprocess-stdout-and-stderr-output-without-distorti

cut off at the end of the read characters. I could readline as a replacement but the printed output is distorted with alternating..

How do I get 'real-time' information back from a subprocess.Popen in python (2.5)

http://stackoverflow.com/questions/874815/how-do-i-get-real-time-information-back-from-a-subprocess-popen-in-python-2-5

If I create a separate thread that does a blocking readline of myprocess.stdout using stdout subprocess.PIPE I don't get.. import Popen PIPE def worker pipe while True line pipe.readline if line '' break else print line proc Popen python subprocess_test.py..

Why is reading lines from stdin much slower in C++ than Python?

http://stackoverflow.com/questions/9371238/why-is-reading-lines-from-stdin-much-slower-in-c-than-python

lps endl else cerr endl return 0 Compiled with g O3 o readline_test_cpp foo.cpp Python Equivalent # usr bin env python import.. lines_per_sec Here are my results cat test_lines . readline_test_cpp Saw 5570000 lines in 9 seconds. Crunch speed 618889.. lines in 9 seconds. Crunch speed 618889 cat test_lines . readline_test.py Read 5570000 lines in 1 seconds. LPS 5570000 Thanks..