python-3.3

问题 I use multiprocessing.connection.Listener for communication between processes, and it works as a charm for me. Now i would really love my mainloop to do something else between commands from client. Unfortunately listener.accept() blocks execution until connection from client process is established. Is there a simple way of managing non blocking check for multiprocessing.connection? Timeout? Or shall i use a dedicated thread? # Simplified code: from multiprocessing.connection import Listener

问题 This question already has answers here : TypeError: unhashable type: 'dict', when dict used as a key for another dict [duplicate] (2 answers) Closed 3 years ago . Suppose I have this dictionary: items = {1: {'title': u'testing123', 'description': u'testing456'}, 2: {'description': u'testing123', 'description': u'testing456'}, 3: {'description': u'testing123', 'description': u'testing456'}, 4: {'description': u'testing123', 'description': u'testing456'}, 5: {'description': u'testing123',

问题 This question already has answers here : TypeError: unhashable type: 'dict', when dict used as a key for another dict [duplicate] (2 answers) Closed 3 years ago . Suppose I have this dictionary: items = {1: {'title': u'testing123', 'description': u'testing456'}, 2: {'description': u'testing123', 'description': u'testing456'}, 3: {'description': u'testing123', 'description': u'testing456'}, 4: {'description': u'testing123', 'description': u'testing456'}, 5: {'description': u'testing123',

问题 I have noticed two different behaviors with two approaches that should have result in the same outcome. The goal - to execute an external program using subprocess module, send some data and read the results. The external program is PLINK, platform is WindowsXP, Python version 3.3. The main idea- execution=["C:\\Pr..\\...\\plink.exe", "-l", username, "-pw", "***", IP] a=subprocess.Popen(execution, bufsize=0, stdout=PIPE, stdin=PIPE, stderr=STDOUT, shell=False) con=a.stdout.readline() if (con

问题 I'm trying to get django-register to work on my website but I keep getting this error which I do not understand I'm using django 1.6 on Python 3.3 NoReverseMatch at /accounts/register/ Reverse for 'index' with arguments '()' and keyword arguments '{}' not found. 0 pattern(s) tried: [] Request Method: GET Request URL: http://127.0.0.1:8000/accounts/register/ Django Version: 1.6.1 Exception Type: NoReverseMatch Exception Value: Reverse for 'index' with arguments '()' and keyword arguments '{}'

问题 In Python 3.3, itertools.accumulate(), which normally repeatedly applies an addition operation to the supplied iterable, can now take a function argument as a parameter; this means it now overlaps with functools.reduce(). With a cursory look, the main differences between the two now would seem to be: accumulate() defaults to summing but doesn't let you supply an extra initial condition explicitly while reduce() doesn't default to any method but does let you supply an initial condition for use

问题 I am trying to set up the compiled version of CPython, on Ubuntu 12.04, by following the python developer guide. Even after installing the dependent packages lzma and sqlite3, build fails indicating that the dependent modules were not found. Exact Error: *Python build finished, but the necessary bits to build these modules were not found: _lzma _sqlite3 _tkinter To find the necessary bits, look in setup.py in detect_modules() for the module's name.* I could not locate the package tkinter.

问题 I can't quite figure out the code to do this, there are similar posts: Repeating elements in list comprehension but I want to repeat a value in the list by the value in the list In [219]: l = [3,1] [i for x in range(i) for i in l] --------------------------------------------------------------------------- TypeError Traceback (most recent call last) <ipython-input-219-84d6f25dfd96> in <module>() 1 l = [3,1] 2 ----> 3 [i for x in range(i) for i in l] TypeError: 'tuple' object cannot be

问题 I was wondering why I can't access the variable: "variable_for_raw_data" after the function ends. The code is like this: def htmlfrom(Website_URL): import urllib.request response = urllib.request.urlopen(Website_URL) variable_for_raw_data =(input("What will this data be saved as: ")) global variable_for_raw_data variable_for_raw_data = response.read() Now why can't I access the variable "variable_for_raw_data" after the functions ends? Things to note: Python 3.3 urllib NOT urllib2 回答1: It

问题 So if I have one list: name = ['Megan', 'Harriet', 'Henry', 'Beth', 'George'] And I have another list where each value represents the names in the right order score_list = [9, 6, 5, 6, 10] So Megan = 9 and Beth = 6 (this is from a dictionary by the way) How would I sort name alphabetically but keep the score_list matching name? I have done the with sorting numbers using the bubble sort method but not strings. 回答1: You can sort them at the same time as tuples by using zip . The sorting will be