Python List Memory Error
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Memory Error Python Pandas
a minute: Sign up Memory errors and list limits? up vote 31 down vote favorite 11 I need to produce large and big (very) matrices (Markov chains) for scientific purposes. I perform calculus that I put in a list of 20301 elements (=one row of my matrix). I need all those data in memory to proceed next Markov step but i python increase memory limit windows can store them elsewhere (eg file) if needed even if it will slow my Markov chain walk-through. My computer (scientific lab): Bi-xenon 6 cores/12threads each, 12GB memory, OS: win64 Traceback (most recent call last): File "my_file.py", line 247, in
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Python Increase Memory Allocation
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Python Memory Error Reading File
ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million http://stackoverflow.com/questions/5537618/memory-errors-and-list-limits programmers, just like you, helping each other. Join them; it only takes a minute: Sign up memory error in python up vote 11 down vote favorite 4 Traceback (most recent call last): File "/run-1341144766-1067082874/solution.py", line 27, in main() File "/run-1341144766-1067082874/solution.py", line 11, in main if len(s[i:j+1]) > 0: MemoryError Error in sys.excepthook: Traceback (most recent http://stackoverflow.com/questions/11283220/memory-error-in-python call last): File "/usr/lib/python2.7/dist-packages/apport_python_hook.py", line 64, in apport_excepthook from apport.fileutils import likely_packaged, get_recent_crashes File "/usr/lib/python2.7/dist-packages/apport/__init__.py", line 1, in from apport.report import Report MemoryError Original exception was: Traceback (most recent call last): File "/run-1341144766-1067082874/solution.py", line 27, in main() File "/run-1341144766-1067082874/solution.py", line 11, in main if len(s[i:j+1]) > 0: MemoryError The above errors appeared when I tried to run the following program. Can someone explain what is a memory error, and how to overcome this problem? . The program takes strings as input and finds all possible sub strings and creates a set(in a lexicographical order) out of it and it should print the value at the respective index asked by the user otherwise it should print 'Invalid' def main(): no_str = int(raw_input()) sub_strings= [] for k in xrange(0,no_str): s = raw_input() a=len(s) for i in xrange(0, a): for j in xrange(0, a): if j >= i: if len(s[i:j+1]) > 0: sub_strings.append(s[i:j+1]) sub_strings = list(set(sub_strings)) sub_strings.sort() queries= int(raw_input()) resul = [] for i in xrang
tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site http://programmers.stackexchange.com/questions/269961/facing-memoryerror-in-python About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Software Engineering Questions Tags Users Badges Unanswered Ask Question _ Software Engineering http://grokbase.com/t/python/python-list/102db8s7pb/memoryerror-can-i-use-more Stack Exchange is a question and answer site for professionals, academics, and students working within the systems development life cycle who care about creating, delivering, and maintaining software responsibly. Join them; it only memory error takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Facing MemoryError in Python up vote 0 down vote favorite I wrote a program to find prime factors of a number. When I give a large number(600851475143) as input, MemoryError pops up. Below is the code: def fact(a): python memory error factors = [] for i in range(1,a+1): if a%i == 0: factors.append(i) return factors num = raw_input(">> ") #600851475143 a = b = [] a = fact(long(num)) for i in range(0,len(a)): b = fact(a[i]) if len(b) <= 2: print a[i] From browsing I came to know that Python makes use of Computer memory - RAM. I am using Python in Unbuntu without changing its configuration. Should I change anythig to work on 64-bit machine. Or should I use any additional function(s) to get around this error python memory error-messages share|improve this question asked Jan 13 '15 at 18:47 Gdek 313 4 Your basic issue is that your algorithm is likely using too much memory. If you are using python 2, then range(1, a+1) is attempting to create a list with 600851475143 elements. This is probably not what you want as each element will be an integer and each integer takes 4 bytes. (Also, this question isn't appropriate for Programmers as you really need a code review and to understand in particular how python works.) –Steven Burnap Jan 13 '15 at 18:56 (You probably want xrange, which is a generator that returns e
program using Python 2.5.4 in windows 32 OS. The amount of data it works with is huge. I have managed to keep memory footprint low, but have found that, independent of the physical RAM of the machine, python always gives the MemoryError message when it has occupied exactly only 2.2 GB. I have tested this in 4 different machines, all with memory of 3 to 4 GB... I'm amazed.Could any of you please help me to figure out how to change that limit? I typed help(MemoryError) and it is a class itself, but that help told me nothing I can use...Thanks,Angelica. reply Tweet Search Discussions Search All Groups Python python-list 17 responses Oldest Nested Chris Kaynor A 32 bit app can only use 4 GB of memory itself (regardless of the amount of system ram), the OS claims some of this for the system, dlls occupy some of it, etc. As such, the app can only really use a smaller subset (generally between 2 to 3 GB, depending upon the app and the OS). Chris -------------- next part -------------- An HTML attachment was scrubbed... URL: Chris Kaynor at Feb 13, 2010 at 12:44 am ⇧ A 32 bit app can only use 4 GB of memory itself (regardless of the amount ofsystem ram), the OS claims some of this for the system, dlls occupy some ofit, etc. As such, the app can only really use a smaller subset (generallybetween 2 to 3 GB, depending upon the app and the OS).ChrisOn Fri, Feb 12, 2010 at 4:21 PM, Echavarria Gregory, Maria Angelica wrote:Dear group:I am developing a program using Python 2.5.4 in windows 32 OS. The amountof data it works with is huge. I have managed to keep memory footprint low,but have found that, independent of the physical RAM of the machine, pythonalways gives the MemoryError message when it has occupied exactly only 2.2GB. I have tested this in 4 different machines, all with memory of 3 to 4GB... I'm amazed.Could any of you please help me to figure out how to change that limit? Ityped help(MemoryError) and it is a class itself, but that help told menothing I can use...Thanks,Angelica.--http://mail.python.org/mailman/listinfo/python-list-------------- next part --------------An HTML attachment was scrubbed...URL: <