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Python: How to make a list of n numbers and randomly select any number?,mylist = list(range(10)) |
"Matplotlib - labelling points (x,y) on a line with a value z",plt.show() |
Django: Grab a set of objects from ID list (and sort by timestamp),objects = Model.objects.filter(id__in=object_ids).order_by('-timestamp') |
How to get the size of a string in Python?,print(len('abc')) |
How to get the size of a string in Python?,print(len('\xd0\xb9\xd1\x86\xd1\x8b')) |
Map two lists into a dictionary in Python,"list(zip(keys, values))" |
Receiving Broadcast Packets in Python,"s.bind(('', 12345))" |
How to find most common elements of a list?,"['you', 'i', 'a']" |
Imshow subplots with the same colorbar,plt.colorbar() |
Regex for removing data in parenthesis,"print(re.sub(' \\(\\w+\\)', '', item))" |
Python - verifying if one list is a subset of the other,"set([1, 2, 2]).issubset([1, 2])" |
How to display the value of the bar on each bar with pyplot.barh()?,plt.show() |
Best way to split every nth string element and merge into array?,list(itertools.chain(*[item.split() for item in lst])) |
Encoding a string to ascii,"s = s.decode('some_encoding').encode('ascii', 'replace')" |
How to invert colors of an image in pygame?,pygame.display.flip() |
removing pairs of elements from numpy arrays that are NaN (or another value) in Python,np.isnan(a).any(1) |
Setting default value for integer field in django models,models.PositiveSmallIntegerField(default=0) |
Cannot import SQLite with Python 2.6,sys.path.append('/your/dir/here') |
How do I get Python's ElementTree to pretty print to an XML file?,f.write(xmlstr.encode('utf-8')) |
random byte string in python,"buf = '\x00' + ''.join(chr(random.randint(0, 255)) for _ in range(4)) + '\x00'" |
Python: how to find common values in three lists,"set(a).intersection(b, c)" |
hex string to character in python,binascii.unhexlify('437c2123') |
Make a dictionary in Python from input values,"{'A1023': 'CRT', 'A1029': 'Regulator', 'A1030': 'Therm'}" |
pandas: best way to select all columns starting with X,df.columns.map(lambda x: x.startswith('foo')) |
surface plots in matplotlib,plt.show() |
How to convert an hexadecimale line in a text file to an array (Python)?,"al_arrays = [[l[i:i + 2] for i in range(0, len(l.strip()), 2)] for l in In_f]" |
Sort Python dict by datetime value,"sorted(dct, key=dct.get)" |
Using headers with the Python requests library's get method,"r = requests.get('http://www.example.com/', headers={'content-type': 'text'})" |
Get a unique computer ID in Python on windows and linux,subprocess.Popen('dmidecode.exe -s system-uuid'.split()) |
Return multiple lists from comprehension in python,"x, y = zip(*[(i, -1 * j) for i, j in enumerate(range(10))])" |
How do I get the modified date/time of a file in Python?,os.path.getmtime(filepath) |
How do you select choices in a form using Python?,form['favorite_cheese'] = ['brie'] |
Get IP address of url in python?,print(socket.gethostbyname('google.com')) |
Getting the row index for a 2D numPy array when multiple column values are known,"np.where(np.any(a == 2, axis=0) & np.any(a == 5, axis=0))" |
How do I change the range of the x-axis with datetimes in MatPlotLib?,"ax.set_ylim([0, 5])" |
Python version 2.7: XML ElementTree: How to iterate through certain elements of a child element in order to find a match,element.find('visits') |
how to print decimal values in python,gpb = float(eval(input())) |
In Python how do you split a list into evenly sized chunks starting with the last element from the previous chunk?,splitlists[-1].append(splitlists[0][0]) |
Extracting stderr from pexpect,child.expect('hi') |
How can I parse a website using Selenium and Beautifulsoup in python?,driver.get('http://news.ycombinator.com') |
How to plot a 3D patch collection in matplotlib?,plt.show() |
Easiest way to remove unicode representations from a string in python 3?,"re.sub('(\\\\u[0-9A-Fa-f]+)', unescapematch, t)" |
Wtforms: How to generate blank value using select fields with dynamic choice values,"form.group_id.choices.insert(0, ('', ''))" |
Matplotlib bar graph x axis won't plot string values,plt.show() |
Can I sort text by its numeric value in Python?,"[('0', 10), ('1', 23), ('2.0', 321), ('2.1', 3231), ('3', 3), ('12.1.1', 2)]" |
How to select increasing elements of a list of tuples?,"a = [a[i] for i in range(1, len(a)) if a[i][1] > a[i - 1][1]]" |
Insert row into Excel spreadsheet using openpyxl in Python,wb.save(file) |
sorting a list of tuples in Python,"sorted([(1, 3), (3, 2), (2, 1)], key=itemgetter(1))" |
How to match beginning of string or character in Python,"re.findall('[a]', 'abcd')" |
Python split consecutive delimiters,"re.split('a+', 'aaa')" |
How to find the indexes of matches in two lists,"[i for i, (a, b) in enumerate(zip(vec1, vec2)) if a == b]" |
Repeating elements in list comprehension,[i for i in range(3) for _ in range(2)] |
Duplicate items in legend in matplotlib?,"ax.plot(x, y, label='Representatives' if i == 0 else '')" |
Regular expression parsing a binary file?,r = re.compile('(This)') |
Setting path to firefox binary on windows with selenium webdriver,driver = webdriver.Firefox() |
Convert Django Model object to dict with all of the fields intact,list(SomeModel.objects.filter(id=instance.id).values())[0] |
Python - concatenate a string to include a single backslash,print('INTERNET\\jDoe') |
How to set Python version by default in FreeBSD?,PYTHON_DEFAULT_VERSION = 'python3.2' |
How to alphabetically sort array of dictionaries on single key?,"sorted(my_list, key=operator.itemgetter('name', 'age', 'other_thing'))" |
How to create an immutable list in Python?,y = list(x) |
How to convert triangle matrix to square in NumPy?,"np.where(np.triu(np.ones(A.shape[0], dtype=bool), 1), A.T, A)" |
Opening and reading a file with askopenfilename,f.close() |
Django filter JSONField list of dicts,Test.objects.filter(actions__contains={'fixed_key_1': 'foo2'}) |
Access an arbitrary element in a dictionary in Python,list(dict.keys())[0] |
Is there a random letter generator with a range?,random.choice(string.ascii_letters[0:4]) |
How to count the number of occurences of `None` in a list?,len([x for x in lst if x is not None]) |
Merge Columns within a DataFrame that have the Same Name,"df.groupby(df.columns, axis=1).agg(numpy.max)" |
Removing duplicates in each row of a numpy array,numpy.array([v for v in vals if len(set(v)) == len(v)]) |
No minor grid lines on the x-axis only,"axes.xaxis.grid(False, which='minor')" |
Open web in new tab Selenium + Python,"browser.execute_script('window.open(""http://bings.com"",""_blank"");')" |
Finding which rows have all elements as zeros in a matrix with numpy,np.where(~a.any(axis=1)) |
How to assert that a method is decorated with python unittest?,"assert getattr(MyClass.my_method, '__wrapped__').__name__ == 'my_method'" |
pandas dataframe select columns in multiindex,"df.xs('A', level='Col', axis=1)" |
How can I make multiple empty arrays in python?,listOfLists = [[] for i in range(N)] |
numpy IndexError: too many indices for array when indexing matrix with another,"matrix([[1, 2, 3], [7, 8, 9], [10, 11, 12]])" |
Assigning a value to Python list doesn't work?,l = [0] * N |
How to disable the minor ticks of log-plot in Matplotlib?,plt.show() |
Convert a list into a nested dictionary,print(d['a']['b']['c']) |
"How to store data frame using PANDAS, Python",df = pd.read_pickle(file_name) |
How to convert false to 0 and true to 1 in python,x = int(x == 'true') |
Python convert csv to xlsx,workbook.close() |
Get 'popular categories' in django,Category.objects.annotate(num_books=Count('book')).order_by('num_books') |
How can I make a blank subplot in matplotlib?,plt.show() |
How to quit a pygtk application after last window is closed/destroyed,"window.connect('destroy', gtk.main_quit)" |
"How to do an inverse `range`, i.e. create a compact range based on a set of numbers?","[1, 1, 2, 2]" |
"I need to securely store a username and password in Python, what are my options?","keyring.get_password('system', 'username')" |
How to send a session message to an anonymous user in a Django site?,request.session['message'] = 'Some Error Message' |
How to replace the nth element of multi dimension lists in Python?,"a = [['0', '0'], ['0', '0'], ['0', '0']]" |
How to create an integer array in Python?,"a = array.array('i', (0 for i in range(0, 10)))" |
Sort a list based on dictionary values in python?,"sorted(trial_list, key=lambda x: trial_dict[x])" |
How can I log outside of main Flask module?,app.run() |
How can I set the y axis in radians in a Python plot?,"ax.plot(x, y, 'b.')" |
"python: dictionary to string, custom format?",""""""", """""".join('='.join((str(k), str(v))) for k, v in list(mydict.items()))" |
How to iterate through sentence of string in Python?,""""""" """""".join(PorterStemmer().stem_word(word) for word in text.split(' '))" |
fill missing indices in pandas,x.resample('D').fillna(0) |
Return a list of weekdays,print(weekdays('Wednesday')) |
"python-social-auth and Django, replace UserSocialAuth with custom model",SOCIAL_AUTH_STORAGE = 'proj.channels.models.CustomSocialStorage' |
How to write unicode strings into a file?,f.write(s.encode('UTF-8')) |
How to choose bins in matplotlib histogram,"plt.hist(x, bins=list(range(-4, 5)))" |
Python remove anything that is not a letter or number,"re.sub('[\\W_]+', '', s, flags=re.UNICODE)" |
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