I am learning Python, and have encountered numpy.sum. It has an optional parameter axis. This parameter is used to get either column-wise summation or row-wise summation. When axis = 0 we imply to sum it over columns only. For example, This snippet of code produces output: array([5, 7, 9]), fine. But if I do:…
salesforce python Beatbox import error
I am trying to log in to salesforce.com’s sandbox using a URL, ID and PASS. I want to use SOAP API for that. When I try to import beatbox in python3, it throws an ImportError exception. However, I can confirm that beatbox is installed in python3. So what am I doing wrong? Is there any other way to do it…
Find longest sequence of 0’s in the integer list
A = [1,2,0,0,3,4,5,-1,0,2,-1,-3,0,0,0,0,0,0,0,0,-2,-3,-4,-5,0,0,0] Return initial and ending index of longest sequence of 0’s in the list. As, longest sequence of 0’s in above list is 0,0,0,0,0,0,0,0 so it should return 12,19 as starting and ending index.Please help with some one line python code.…
quickest way to swap index with values
consider the pd.Series s What is the quickest way to swap index and values and get the following Answer One posible solution is swap keys and values by: Another the fastest: Timings: If length of Series is 1M:
Keeping ‘key’ column when using groupby with transform in pandas
Finding a normalized dataframe removes the column being used to group by, so that it can’t be used in subsequent groupby operations. for example (edit: updated): Now, with most operations on groups the ‘missing’ column becomes a new index (which can then be adjusted using reset_index, or set…
Python running as Windows Service: OSError: [WinError 6] The handle is invalid
I have a Python script, which is running as a Windows Service. The script forks another process with: which causes the following error: Answer Line 1117 in subprocess.py is: which made me suspect that service processes do not have a STDIN associated with them (TBC) This troublesome code can be avoided by supp…
Django Admin set extra to 0 when editing
Setting extra = 1 in my model always shows a 1 empty field. It is OK while inserting a new item but I don’t want to show an additional empty field while editing. How can I do this? models.py: admin.py: Answer Override the get_extra method instead of setting a value for extra class member. Returns the nu…
PyInstaller file fails to execute script – DistributionNotFound
I’m trying to convert my python file to an executable using PyInstaller. The program uses the Google Cloud Translate API to translate given text between languages. When running python quicktrans.py in the terminal, the program works fine. Then I ran pyinstaller quicktrans.py, SHIFT + right-clicked the d…
How to plot multiple lines in one figure in Pandas Python based on data from multiple columns? [duplicate]
This question already has answers here: Plotting multiple lines, in different colors, with pandas dataframe (6 answers) Closed 1 year ago. I have a dataframe with 3 columns, like this: how can I plot a line for A, B and C, where it shows how their weight develops through the years. So I tried this: However, I…
How to make a nested for loop using a generator in python?
I’m trying to convert this nested for loop: to a one liner, something like this: But I’m getting this error: all_R is a defaultdict where every value has keys that are pairs, and I’m interested in just one value from that pair: Answer List comprehensions are written in the same order as for …