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PYTHON QUESTIONS

Sorting in R and Numpy
Sorting in R and Numpy
will be helpful for those in need Looking at the documentation of order, it looks like r uses radix sort for short vectors, which is indeed a stable sort. argsort on the other hand uses quicksort by default which is not a stable sort, and will not gu
TAG : python
Date : November 14 2020, 04:01 AM , By : lukewertz
How to plot columns of two separate DataFrames in one plot ( subplots representing each column)
How to plot columns of two separate DataFrames in one plot ( subplots representing each column)
I wish did fix the issue. I have two DataFrames like below. They are exactly the same in terms of column names and structure. The difference is one dataframe is prediction and one is observed data. I need to plot a figure with subplots where each sub
TAG : python
Date : November 14 2020, 04:01 AM , By : John Engstrom
Produce pie chart subplots for unique results in groupby?
Produce pie chart subplots for unique results in groupby?
To fix this issue What is the best way to produce pie charts for unique values in a Dataframe? , Is this what you had in mind?
TAG : python
Date : November 14 2020, 04:01 AM , By : user2182876
Django 1.11 endpoint slow, nested serializer with too many results
Django 1.11 endpoint slow, nested serializer with too many results
seems to work fine The method c__objects in the A model is creating too many queries. You can fetch all the C objects, you can use select_related to fetch the B fields, through which you can filter the current A objects.
TAG : python
Date : November 14 2020, 04:01 AM , By : pat3456
Python: Unable to open excel file using openpyxl -- file exists and is in right location
Python: Unable to open excel file using openpyxl -- file exists and is in right location
it helps some times Your excel file have an image. I had the same error code, deleted the images in the workbook and that worked out.
TAG : python
Date : November 14 2020, 04:01 AM , By : Mituca Andrei
float() object id creation order
float() object id creation order
will help you
TAG : python
Date : November 14 2020, 04:01 AM , By : user2182838
Import and use R 'heavy' package using rpy2
Import and use R 'heavy' package using rpy2
may help you . May be this is because there is no object called heavy defined in your Python code as you have chosen to map the R package to an object called custom_analytics ?If the case, then the R function you are looking for can be called with cu
TAG : python
Date : November 14 2020, 04:01 AM , By : Naty Brenes
python + tornado : 404 on imported request handler
python + tornado : 404 on imported request handler
this will help Fixed it ! In my import, i import the whole CountHandler lib. Therefore if i want to use the class CountHandler in my code it should be CountHandler.CountHandler ( ImportedLib.Myclass )
TAG : python
Date : November 14 2020, 04:01 AM , By : user2182827
Using partial with a conditional default argument
Using partial with a conditional default argument
I wish this help you I'm using partial on a library function to supply it with a default value for one of the parameters , You can use a wrapper function instead:
TAG : python
Date : November 14 2020, 04:01 AM , By : user2182820
Convert a dataframe in pandas based on column names
Convert a dataframe in pandas based on column names
should help you out I think this is what you are looking for... you can use concat after splitting out the parts of your dataframe:
TAG : python
Date : November 14 2020, 04:01 AM , By : Carlos Rockdríguez
Returning str and int From a Function
Returning str and int From a Function
I hope this helps . Your variables are local to your function. Don't use global here, just unpack:
TAG : python
Date : November 14 2020, 04:01 AM , By : user2182772
How can I convert list into datetime with miliseconds?
How can I convert list into datetime with miliseconds?
like below fixes the issue You could parse it without modifying the string, specifying the format for the datetime.strptime() appropriately:
TAG : python
Date : November 14 2020, 04:01 AM , By : user2182735
Having trouble using int(), split(), and nosetests with Python
Having trouble using int(), split(), and nosetests with Python
With these it helps You can use isnumeric() method to check if the string is numeric and than do a conversion to int.
TAG : python
Date : November 14 2020, 04:01 AM , By : monika molionalea
sympy calculate nth recurrence without using rsolve
sympy calculate nth recurrence without using rsolve
Hope that helps Here's my solution to evaluate recurrence relations numerically. When you specify the recurrence relation as input to simplify, make sure that the value f(x) is not part of the string. That is, if your recurrence relation is
TAG : python
Date : November 14 2020, 04:01 AM , By : Ahmer Majeed
Unable to post with python api, login state - KeyError: "name='loggedin', domain=None, path=None"
Unable to post with python api, login state - KeyError: "name='loggedin', domain=None, path=None"
I wish this helpful for you Ok, this is your second issue :). The website has changed a lot, so this library is outdated. loggedin is gone that you will not see this parameter again in cookies , and you have to change it into if not self.con.cookies.
TAG : python
Date : November 14 2020, 04:01 AM , By : Junki Kim
Python - Unpacking a two index dataframe
Python - Unpacking a two index dataframe
should help you out pd.pivot_table + groupby + pd.Grouper You can transform series values into column labels and then groupby:
TAG : python
Date : November 13 2020, 04:01 AM , By : Sting
PyQt video frame update signal (Trigger function after each video frame)
PyQt video frame update signal (Trigger function after each video frame)
Hope this helps There are 2 options: positionChanged is emited every second because the notifyInterval property of QMediaPlayer is set in that period. So you can change that property, for example to 60 ms.
TAG : python
Date : November 13 2020, 04:01 AM , By : user2182661
Python PUT requests, send int instead of string
Python PUT requests, send int instead of string
seems to work fine As stubborn as a programmer can be, I found a way to send values as they are using lxml to build the XML and adding a string "post_xml=" before the XML to send, works just fine:
TAG : python
Date : November 13 2020, 04:01 AM , By : user2182645
How do I make OpenGL draw do a non-display surface in pygame?
How do I make OpenGL draw do a non-display surface in pygame?
help you fix your problem You have to create a Framebuffer Object (before the main loop) with a resoultion smaller than the window resolution. See also Framebuffer Object Extension Examples:
TAG : python
Date : November 13 2020, 04:01 AM , By : Venkatraman Hegde
Use pandas between_time() function with list as input arguments
Use pandas between_time() function with list as input arguments
wish helps you I solved my problem. The out of memory error was caused by the following line:
TAG : python
Date : November 13 2020, 04:01 AM , By : user2182624
Select two dates with calendar keyboard Python Telegram Bot
Select two dates with calendar keyboard Python Telegram Bot
should help you out I need a telegram bot that allows me to select two dates, after having chosen a name. This is my code I'm new at this, I hope you can help me, I'm using it python-telegram-bot , This isn't the best answer but it's working for me.
TAG : python
Date : November 13 2020, 04:01 AM , By : user2182616
Tkinter using .grid() correctly
Tkinter using .grid() correctly
will help you What I recommend is to not use grid in this situation. You can more easily get what you want using pack. You clearly have two top-level elements: a canvas on the right and a stack of buttons on the left. So, create a frame for the butto
TAG : python
Date : November 13 2020, 04:01 AM , By : Gin Chen Shen
Python: Weighted coefficient of variation
Python: Weighted coefficient of variation
will be helpful for those in need This can be done using the statsmodels.stats.weightstats.DescrStatsW class in the statsmodels package for calculating weighted statistics.
TAG : python
Date : November 13 2020, 04:01 AM , By : TonyJ
How to check if a text file has gotten bigger?
How to check if a text file has gotten bigger?
Hope this helps Is this what you want? It loops forever, printing all the names as it finds them.
TAG : python
Date : November 13 2020, 04:01 AM , By : Hooman Askari
Counting Ocurrences of Permutations of a given column
Counting Ocurrences of Permutations of a given column
I think the issue was by ths following , There are posts on ways to make the cartesian product more efficient, but the basic idea is: merge on 'WEB_ID' to get all combinations of 'Category'. (This inherently gives the reciprocity of AB-BA matches you
TAG : python
Date : November 13 2020, 04:01 AM , By : Joakim
Secret from Gogs hook (failing to get on python3)
Secret from Gogs hook (failing to get on python3)
I hope this helps . It seems that the variable that had the payload was not escaping some characters, since I'm using the python framework Bottle this is the right way to get the payload:
TAG : python
Date : November 13 2020, 04:01 AM , By : saribeiro
Which class label is considered negative in sklearn.metrics.confusion_matrix?
Which class label is considered negative in sklearn.metrics.confusion_matrix?
I wish this helpful for you Short answer In binary classification, when using the argument labels ,
TAG : python
Date : November 13 2020, 04:01 AM , By : Uday Nayak
How to select a Pandas Dataframe where a condition is met until the last element of a group?
How to select a Pandas Dataframe where a condition is met until the last element of a group?
may help you . How do I select only the rows where val is greater than 5 until the last record in each id of this sample dataframe? , One option is using groupby and cumprod.
TAG : python
Date : November 13 2020, 04:01 AM , By : user2182560
Modify CSV file input from spiders while launching CrawlerProcess / Scrapy
Modify CSV file input from spiders while launching CrawlerProcess / Scrapy
around this issue You can pass arguments to your spider crawl which I think is what you need to make this work.Change your code to:
TAG : python
Date : November 13 2020, 04:01 AM , By : user2182538
Unsorted Lists vs Linear and Binary Search
Unsorted Lists vs Linear and Binary Search
around this issue Linear search takes just O(n), while sorting a list first takes O(n log n). Since you are going to search the list only once for a value, the fact that subsequent searches in the sorted list with a binary search takes only O(log n)
TAG : python
Date : November 13 2020, 04:01 AM , By : mengdream
Python PIL open image from specific file
Python PIL open image from specific file
it should still fix some issue The os.listdir function returns a path relative to the directory you specified so you have to os.path.join the directory to the name you got:
TAG : python
Date : November 13 2020, 04:01 AM , By : art65536
how to compare two text document with tfidf vectorizer?
how to compare two text document with tfidf vectorizer?
should help you out As G. Anderson already pointed out, and to help the future guys on this, when we use the fit function of TFIDFVectorizer on document D1, it means that for the D1, the bag of words are constructed.The transform() function computes
TAG : python
Date : November 13 2020, 04:01 AM , By : Angus
Adding user time in python 3
Adding user time in python 3
wish helps you Simple using timedelta create an offset indicated by timedelta object and ad it to your time object (working the same with date and datetime too).
TAG : python
Date : November 13 2020, 04:01 AM , By : user2182506
Set Origin header to websocket-client
Set Origin header to websocket-client
this one helps. I found the solution. I needed to write origin to ws.run_forever(origin=originVar).
TAG : python
Date : November 13 2020, 04:01 AM , By : user2182473
What does a numpy shape starting with zero mean
What does a numpy shape starting with zero mean
I wish this help you As far as I know it's just a redundant way to express an empty array. It doesn't seems to matter for python if you have rows of "emptiness".Let's say we have a give array a:
TAG : python
Date : November 13 2020, 04:01 AM , By : Michael
django unit test client response has empty request
django unit test client response has empty request
Hope this helps I found the error myself:The test client was working just fine. Some of the sites were really not working.
TAG : python
Date : November 13 2020, 04:01 AM , By : Saravanan
IndentationError in python3.7 using PythonAnywhere.com interpreter
IndentationError in python3.7 using PythonAnywhere.com interpreter
may help you . I faced this error a while back. It happened because the code was copied and pasted directly from a pdf. What I'm suggesting is to basically re-write the code which might solve the problem or another thing that seems to be the problem
TAG : python
Date : November 13 2020, 04:01 AM , By : user2182368
How to generate points in a sphere and plot them with pyplot?
How to generate points in a sphere and plot them with pyplot?
fixed the issue. Will look into that further Probably you are generating the angle using uniformly distributed random numbers, and that's is not the case. The volume differential in 3D is something like (dr^3)(d cos theta) (d phi), that means that th
TAG : python
Date : November 13 2020, 04:01 AM , By : Amna Sultan
Parse only 2 defined columns html table into dictionary for later usage
Parse only 2 defined columns html table into dictionary for later usage
hope this fix your issue Ok, you are able to use html_table_extractor to extract tabular data from html into a csv file named output.csv.The next operation is to parse that file with the standard library csv module:
TAG : python
Date : November 12 2020, 04:01 AM , By : user2182342
How to get the body of an answer using the Stack Exchange API?
How to get the body of an answer using the Stack Exchange API?
may help you . Refer to these posts on Stack Apps: Get questions with body and answers How to get Question/Answer body in the API response using filters? My filter is not returning any results. How to create a minimal filter?
TAG : python
Date : November 12 2020, 04:01 AM , By : user2182333
PySpark: How to Convert UTC Timestamp Field to CST (US/Central) Keeping Timestamp Datatype
PySpark: How to Convert UTC Timestamp Field to CST (US/Central) Keeping Timestamp Datatype
Any of those help In spark dataframe, you can use from_utc_timestamp() function to convert UTC to other timezones.
TAG : python
Date : November 12 2020, 04:01 AM , By : user2182284
Load data and average in single operation
Load data and average in single operation
I wish this helpful for you Here is a method for wrangling your data into a dataframe using itertools.groupby() and pandas:
TAG : python
Date : November 12 2020, 04:01 AM , By : Alex Diaz
How to get current time in a specific timezone?
How to get current time in a specific timezone?
like below fixes the issue It might be tricky without an external library, so i suggest you use the pytz package
TAG : python
Date : November 12 2020, 04:01 AM , By : user2182268
Python, read from file -> add file content to list -> compare list to user input
Python, read from file -> add file content to list -> compare list to user input
I wish this helpful for you The string you are reading from a file has a new line at the end.You can easily remove it using strip() (remove surrounding whitespace) or rstrip() (remove trailing whitespace).
TAG : python
Date : November 12 2020, 04:01 AM , By : user2182258
ValueError on Lambda
ValueError on Lambda
hope this fix your issue This (321,321,2) is the shape of your y_train.This means you're trying to predict two classes/channels per image. Your model must then output 2 classes as well.
TAG : python
Date : November 12 2020, 04:01 AM , By : user2182256
Select rows that lie within datetime intervals
Select rows that lie within datetime intervals
Hope this helps You can try this, I hope the Start and End comes one after the other and is sorted.
TAG : python
Date : November 12 2020, 04:01 AM , By : Par Ya II
How to format seaborn/matplotlib axis tick labels from number to thousands or Millions? (125,436 to 125.4K)
How to format seaborn/matplotlib axis tick labels from number to thousands or Millions? (125,436 to 125.4K)
around this issue , IIUC you can format the xticks and set these:
TAG : python
Date : November 12 2020, 04:01 AM , By : Ekim
Improve performance of masking followed by weighted average
Improve performance of masking followed by weighted average
this one helps. I played around with your code and happened to try if doing the weighted average directly without using np.average would be quicker, and it looks like it is. On my platform it is about 40% faster.
TAG : python
Date : November 12 2020, 04:01 AM , By : Gabriel
How does Anaconda handle existing Python installation
How does Anaconda handle existing Python installation
Does that help Anaconda in installed in ~/anaconda2 or ~/anaconda3 by default except if you specified another directory. Normally, anaconda does not change anything in /usr/bin but it adds /path/to/anaconda/bin to your path (in ~/.bashrc) (again, you
TAG : python
Date : November 12 2020, 04:01 AM , By : Adam Cranston
Flask send_file not sending file
Flask send_file not sending file
I hope this helps you . I'm using Flask with send_file() to have people download a file off the server. , You need to return the result of send_file:
TAG : python
Date : November 12 2020, 04:01 AM , By : andoo
attrgetter: Altering Default Order When Sorting by Object Attribute
attrgetter: Altering Default Order When Sorting by Object Attribute
this one helps. I found the answer here, thanks to @KylePDavis, who provided a generalized solution where the attribute can be passed in as an argument. The key is defining the key using a lambda function.My code now looks as follows. Note the input
TAG : python
Date : November 12 2020, 04:01 AM , By : PEIQIAO
Order By with Foreign Object Field if it exists
Order By with Foreign Object Field if it exists
I hope this helps . You can try like this using conditional statement:
TAG : python
Date : November 12 2020, 04:01 AM , By : paperen
Join strings in each group and assign back to the original DataFrame
Join strings in each group and assign back to the original DataFrame
I wish did fix the issue. Use transform to "broadcast" the groupby result to each row in the input.
TAG : python
Date : November 12 2020, 04:01 AM , By : Andrea Driscoll Reid
Correct way to paint progressively with pyqt5
Correct way to paint progressively with pyqt5
will be helpful for those in need You should never call paintEvent directly, you must use update() to call it indirectly. On the other hand if you want to be called every so often you should use a QTimer or better a QTimeLine in this case.
TAG : python
Date : November 12 2020, 04:01 AM , By : sudeep bhuyan
Scrapy Crawler Process Setting
Scrapy Crawler Process Setting
wish of those help This happens because each spider is running individually without them knowing about each other.Of course, all spiders are using the same settings, but that's the only connection.
TAG : python
Date : November 12 2020, 04:01 AM , By : taesup
Broadcast groupby result as new column in original DataFrame
Broadcast groupby result as new column in original DataFrame
wish helps you I am trying to create a new column in a Pandas dataframe based on two columns in a grouped dataframe. , You're one step away.
TAG : python
Date : November 12 2020, 04:01 AM , By : user2182184
How to flatten an array to a matrix in Numpy?
How to flatten an array to a matrix in Numpy?
it helps some times I am looking for an elegant way to flatten an array of arbitrary shape to a matrix based on a single parameter that specifies the dimension to retain. For illustration, I would like , We can permute axes and reshape -
TAG : python
Date : November 12 2020, 04:01 AM , By : ramz
pandas apply with numpy interp, dimension problems
pandas apply with numpy interp, dimension problems
it fixes the issue The issue is you are trying to return an array, which doesn't reduce. You can instead return a list of the values.
TAG : python
Date : November 12 2020, 04:01 AM , By : dev.marmot
My script encounters an error when it is supposed to run asynchronously
My script encounters an error when it is supposed to run asynchronously
To fix this issue I've written a script in python using asyncio association with aiohttp library to parse the names out of pop up boxes initiated upon clicking on contact info buttons out of diffetent agency information located within a table from th
TAG : python
Date : November 12 2020, 04:01 AM , By : user2182145
Searching for ID from big lists faster in python 2.7?
Searching for ID from big lists faster in python 2.7?
This might help you The main problem is that your data structure isn't set up to give you the access you want. Instead of a list of dicts, make this the natural dict that you want to use:
TAG : python
Date : November 12 2020, 04:01 AM , By : Javier rodriquez

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