python Programming Glossary: chunk

http://stackoverflow.com/questions/14262433/large-data-work-flows-using-pandas

pandas at least 0.10.1 installed. Read iterating files chunk by chunk and multiple table queries . Since pytables is optimized.. at least 0.10.1 installed. Read iterating files chunk by chunk and multiple table queries . Since pytables is optimized to.. the file additional options hmay be necessary here # the chunksize is not strictly necessary you may be able to slurp each..

Stream large binary files with urllib2 to file

http://stackoverflow.com/questions/1517616/stream-large-binary-files-with-urllib2-to-file

this question No reason to work line by line small chunks AND requires Python to find the line ends for you just chunk.. AND requires Python to find the line ends for you just chunk it up in bigger chunks e.g. req urllib2.urlopen url CHUNK 16.. to find the line ends for you just chunk it up in bigger chunks e.g. req urllib2.urlopen url CHUNK 16 1024 with open file 'wb'..

Alternative way to split a list into groups of n

http://stackoverflow.com/questions/1624883/alternative-way-to-split-a-list-into-groups-of-n

of accomplishing the task n 25 for i in range 0 len L n chunk L i i 25 Is there a built in to do this I'm missing Edit Early..

Python urllib2 Progress Hook

http://stackoverflow.com/questions/2028517/python-urllib2-progress-hook

fully working example that builds on Anurag's approach of chunking in a response. My version allows you to set the the chunk.. in a response. My version allows you to set the the chunk size and attach an arbitrary reporting function import urllib2.. an arbitrary reporting function import urllib2 sys def chunk_report bytes_so_far chunk_size total_size percent float bytes_so_far..

How to stream an HttpResponse with Django

http://stackoverflow.com/questions/2922874/how-to-stream-an-httpresponse-with-django

for x in range 1 11 yield s n x # Returns a chunk of the response to the browser time.sleep 1 python django streaming..

Lazy Method for Reading Big File in Python?

http://stackoverflow.com/questions/519633/lazy-method-for-reading-big-file-in-python

To write a lazy function just use yield def read_in_chunks file_object chunk_size 1024 Lazy function generator to read.. function just use yield def read_in_chunks file_object chunk_size 1024 Lazy function generator to read a file piece by piece... function generator to read a file piece by piece. Default chunk size 1k. while True data file_object.read chunk_size if not..

Iterate an iterator by chunks (of n) in Python?

http://stackoverflow.com/questions/8991506/iterate-an-iterator-by-chunks-of-n-in-python

an iterator by chunks of n in Python Can you think of a nice way maybe with itertools.. a nice way maybe with itertools to split an iterator into chunks of given size Therefore l 1 2 3 4 5 6 7 with chunks l 3 becomes.. into chunks of given size Therefore l 1 2 3 4 5 6 7 with chunks l 3 becomes an iterator 1 2 3 4 5 6 7 I can think of a small..

Generating file to download with Django

http://stackoverflow.com/questions/908258/generating-file-to-download-with-django

myfile StringIO.StringIO while not_finished # generate chunk myfile.write chunk Optionally you can set Content Length header.. while not_finished # generate chunk myfile.write chunk Optionally you can set Content Length header as well response..

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

uses plain C read within the safe read.c wrapper to read chunks of 16k bytes at a time and count new lines. Here's a python.. replaces the python for loop BUFFER_SIZE 16384 count sum chunk.count ' n' for chunk in iter partial sys.stdin.read BUFFER_SIZE.. for loop BUFFER_SIZE 16384 count sum chunk.count ' n' for chunk in iter partial sys.stdin.read BUFFER_SIZE '' The performance..

Starting two methods at the same time in Python

http://stackoverflow.com/questions/13422186/starting-two-methods-at-the-same-time-in-python

stream.close p.terminate def listen_to_audio forHowLong CHUNK 1024 FORMAT pyaudio.paInt16 CHANNELS 2 RATE 44100 RECORD_SECONDS.. channels CHANNELS rate RATE input True frames_per_buffer CHUNK print recording frames for i in range 0 int RATE CHUNK RECORD_SECONDS.. CHUNK print recording frames for i in range 0 int RATE CHUNK RECORD_SECONDS data stream.read CHUNK frames.append data print..

Stream large binary files with urllib2 to file

http://stackoverflow.com/questions/1517616/stream-large-binary-files-with-urllib2-to-file

chunk it up in bigger chunks e.g. req urllib2.urlopen url CHUNK 16 1024 with open file 'wb' as fp while True chunk req.read.. 1024 with open file 'wb' as fp while True chunk req.read CHUNK if not chunk break fp.write chunk experiment a bit with various.. chunk break fp.write chunk experiment a bit with various CHUNK sizes to find the sweet spot for your requirements. share improve..

Simultaneous record audio from mic and play it back with effect in python

http://stackoverflow.com/questions/17711672/simultaneous-record-audio-from-mic-and-play-it-back-with-effect-in-python

as audiolab import pyaudio import wave def recordAudio CHUNK 1024 FORMAT pyaudio.paInt16 CHANNELS 1 RATE 44100 RECORD_SECONDS.. CHANNELS rate RATE input True frames_per_buffer CHUNK print recording frames for i in range 0 int RATE CHUNK RECORD_SECONDS.. CHUNK print recording frames for i in range 0 int RATE CHUNK RECORD_SECONDS data stream.read CHUNK frames.append data print..