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Merging items in a list - Python,"from functools import reduce |
reduce(lambda x, y: 10 * x + y, [1, 2, 3, 4, 5])" |
Count the number of Occurrence of Values based on another column,df.Country.value_counts().reset_index(name='Sum of Accidents') |
Python Regex - Remove special characters but preserve apostraphes,"re.sub(""[^\\w' ]"", '', ""doesn't this mean it -technically- works?"")" |
How can I handle an alert with GhostDriver via Python?,driver.execute_script('window.confirm = function(){return true;}') |
Divide the values of two dictionaries in python,{k: (d2[k] / d1[k]) for k in list(d1.keys()) & d2} |
Replacing the empty strings in a string,"string2.replace('', string1)[len(string1):-len(string1)]" |
How do I use extended characters in Python's curses library?,window.addstr('\xcf\x80') |
"in Python, how to convert list of float numbers to string with certain format?",str_list = [['{0:.8e}'.format(flt) for flt in sublist] for sublist in lst] |
Sort numpy matrix row values in ascending order,"numpy.sort(arr, axis=0)" |
Comparing two .txt files using difflib in Python,"difflib.SequenceMatcher(None, file1.read(), file2.read())" |
Convert tab-delimited txt file into a csv file using Python,"open('demo.txt', 'rb').read()" |
pandas: how do I select first row in each GROUP BY group?,"df.sort('A', inplace=True)" |
matplotlib colorbar formatting,cb.ax.yaxis.set_major_formatter(plt.FuncFormatter(myfmt)) |
Adding a y-axis label to secondary y-axis in matplotlib,plt.show() |
How do I transform a multi-level list into a list of strings in Python?,"list(map(''.join, a))" |
How to set same color for markers and lines in a matplotlib plot loop?,plt.savefig('test.png') |
Select rows from a DataFrame based on values in a column in pandas,print(df.loc[df['A'] == 'foo']) |
How to make curvilinear plots in matplotlib,plt.axis('off') |
Pandas DataFrame Add column to index without resetting,"df.set_index(['d'], append=True)" |
send xml file to http using python,print(response.read()) |
How to plot events on time on using matplotlib,plt.show() |
Named tuples in a list,a = [mynamedtuple(*el) for el in a] |
Unable to click the checkbox via Selenium in Python,element.click() |
Accessing dictionary by key in Django template,{{json.key1}} |
Why Pandas Transform fails if you only have a single column,df.groupby('a').transform('count') |
Inheritance of attributes in python using _init_,"super(Teenager, self).__init__(name, phone)" |
Percentage match in pandas Dataframe,(trace_df['ratio'] > 0).mean() |
How to get a list of all integer points in an n-dimensional cube using python?,"list(itertools.product(list(range(-x, y)), repeat=dim))" |
Append tuples to a tuples,"(1, 2), (3, 4), (5, 6), (8, 9), (0, 0)" |
Python . How to get rid of '\r' in string?,line.strip() |
Shortest way to convert these bytes to int in python?,"struct.unpack('>q', s)[0]" |
convert a string of bytes into an int (python),"struct.unpack('<L', 'y\xcc\xa6\xbb')[0]" |
How do I properly use connection pools in redis?,redis_conn = redis.Redis(connection_pool=redis_pool) |
How to write unittest for variable assignment in python?,do_something() |
How to sort python list of strings of numbers,"a = sorted(a, key=lambda x: float(x))" |
How to convert list of numpy arrays into single numpy array?,"numpy.concatenate(LIST, axis=0)" |
Running Python code contained in a string,"eval(""print('Hello')"")" |
Python: How to check a string for substrings from a list?,any(substring in string for substring in substring_list) |
Unescaping escaped characters in a string using Python 3.2,s.encode('utf8') |
Getting the indices of several elements in a NumPy array at once,"np.in1d(b, a).nonzero()[0]" |
How to calculate cointegrations of two lists?,"b = [5.23, 6.1, 8.3, 4.98]" |
how to sort lists within list in user defined order?,"[['*', '+', '-'], ['*', '*', '-'], ['/', '+', '-']]" |
How to round each item in a list of floats to 2 decmial places,"['0.30', '0.50', '0.20']" |
pandas dataframe groupby and get nth row,df.groupby('ID').apply(lambda t: t.iloc[1]) |
How do I compile a Visual Studio project from the command-line?,os.system('msbuild project.sln /p:Configuration=Debug') |
Counting array elements in Python,len(myArray) |
Python creating a smaller sub-array from a larger 2D NumPy array?,"data[:, ([1, 2, 4, 5, 7, 8])]" |
Sorting a defaultdict by value in python,"sorted(iter(cityPopulation.items()), key=lambda k_v: k_v[1][2], reverse=True)" |
How do I integrate Ajax with Django applications?,"return render_to_response('index.html', {'variable': 'world'})" |
How do I merge a 2D array in Python into one string with List Comprehension?,[item for innerlist in outerlist for item in innerlist] |
How to use Beautiful Soup to find a tag with changing id?,soup.findAll(id=re.compile('para$')) |
rename index of a pandas dataframe,df.ix['c'] |
pandas dataframe create new columns and fill with calculated values from same df,df['A_perc'] = df['A'] / df['sum'] |
how to annotate heatmap with text in matplotlib?,plt.show() |
Efficient Python array with 100 million zeros?,a[i] += 1 |
How can I exit Fullscreen mode in Pygame?,"pygame.display.set_mode(size, FULLSCREEN)" |
Most efficient way to split strings in Python,"['Item 1 ', ' Item 2 ', ' Item 3 ', ' Item 4 ', ' Item 5']" |
Faster way to rank rows in subgroups in pandas dataframe,df.groupby('group')['value'].rank(ascending=False) |
Regex to match space and a string until a forward slash,regexp = re.compile('^group/(?P<group>[^/]+)/users$') |
Regex to match space and a string until a forward slash,regexp = re.compile('^group/(?P<group>[^/]+)/users/(?P<user>[^/]+)$') |
How to remove empty string in a list?,cleaned = [x for x in your_list if x] |
"Using matplotlib, how can I print something ""actual size""?","fig.savefig('ten_x_seven_cm.png', dpi=128)" |
How to group similar items in a list?,"[list(g) for _, g in itertools.groupby(test, lambda x: x.split('_')[0])]" |
How to do a less than or equal to filter in Django queryset?,User.objects.filter(userprofile__level__gte=0) |
How to convert list of intable strings to int,list_of_lists = [[try_int(x) for x in lst] for lst in list_of_lists] |
How to share the global app object in flask?,app = Flask(__name__) |
python import a module from a directory(package) one level up,sys.path.append('../..') |
Rotate axis text in python matplotlib,"ax.set_xticklabels(ax.xaxis.get_majorticklabels(), rotation=45)" |
Finding tuple in the list of tuples (sorting by multiple keys),"sorted(t, key=lambda i: (i[1], -i[2]))" |
Is there a generator version of `string.split()` in Python?,"list(split_iter(""A programmer's RegEx test.""))" |
How do you debug url routing in Flask?,app.run(debug=True) |
Capture stdout from a script in Python,sys.stdout.write('foobar') |
How can I get the color of the last figure in matplotlib?,"ebar = plt.errorbar(x, y, yerr=err, ecolor='y')" |
Django App Engine: AttributeError: 'AnonymousUser' object has no attribute 'backend',"django.contrib.auth.authenticate(username=username, password=password)" |
Creating a simple XML file using python,tree.write('filename.xml') |
Rotating a two-dimensional array in Python,"[[1, 2, 3], [4, 5, 6], [7, 8, 9]]" |
Django logging to console,logger = logging.getLogger(__name__) |
How to make a 3D scatter plot in Python?,pyplot.show() |
2D array of objects in Python,nodes = [[Node() for j in range(cols)] for i in range(rows)] |
Capturing group with findall?,"re.findall('abc(de)fg(123)', 'abcdefg123 and again abcdefg123')" |
Python - How to cut a string in Python?,s = 'http://www.domain.com/?s=some&two=20' |
how to call python function from NodeJS,sys.stdout.flush() |
How to overplot a line on a scatter plot in python?,plt.show() |
Point and figure chart with matplotlib,plt.show() |
How to set number of ticks in plt.colorbar?,plt.show() |
Removing character in list of strings,"print([s.replace('8', '') for s in lst])" |
Create a list of integers with duplicate values in Python,"print([u for v in [[i, i] for i in range(5)] for u in v])" |
Convert datetime object to a String of date only in Python,dt.strftime('%m/%d/%Y') |
How to get output from subprocess.Popen(),sys.stdout.flush() |
Transform comma separated string into a list but ignore comma in quotes,"['1', '', '2', '3,4']" |
Merge sorted lists in python,"sorted(itertools.chain(args), cmp)" |
Remove or adapt border of frame of legend using matplotlib,plt.legend(frameon=False) |
How to crop an image in OpenCV using Python,cv2.waitKey(0) |
Python: Assign each element of a List to a separate Variable,"a, b, c = [1, 2, 3]" |
Multiple 'in' operators in Python?,"all(word in d for word in ['somekey', 'someotherkey', 'somekeyggg'])" |
"from list of integers, get number closest to a given value","min(myList, key=lambda x: abs(x - myNumber))" |
Python regex split a string by one of two delimiters,"sep = re.compile('[\\s,]+')" |
How can a pandas merge preserve order?,"x.reset_index().merge(y, how='left', on='state', sort=False).sort('index')" |
Index of element in Numpy array,"i, j = np.where(a == value)" |
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