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PYTHON QUESTIONS

Is there any difference between Python list slicing [-1:] and [-1]?
Is there any difference between Python list slicing [-1:] and [-1]?
this will help I have read a snippet of code like this: , The difference is that the result of slicing a list is a list
TAG : python
Date : November 06 2020, 09:01 AM , By : Priyankaa Rajendran
Average from two list of dictionaries
Average from two list of dictionaries
around this issue I have two list of dictionaries and I want to find the average of values from each of them based upon the key value. i.e I want to match the keys and average its values from list of dictionaries. , Try:
TAG : python
Date : November 06 2020, 09:01 AM , By : yakov
Flask-Uploads gives AttributeError?
Flask-Uploads gives AttributeError?
like below fixes the issue As you noticed, Flask-Uploads 0.1.3 doesn't support Python 3 due to the call to dict.itervalues().I recently took over as maintainer of the Flask-Uploads project, and accepted a PR fixing the issue in this commit.
TAG : python
Date : November 06 2020, 09:01 AM , By : Hates
nested function in python (taking the output from another function)
nested function in python (taking the output from another function)
I think the issue was by ths following , A function is a piece of code that receive arguments, and to those arguments you assign a name. For example:
TAG : python
Date : November 06 2020, 09:01 AM , By : ahmed abdelaty
Explanation needed for a syntax in python
Explanation needed for a syntax in python
may help you . This sort of syntax is used for accessing/modifying Python dictionaries. The example var["Something"] = anything is setting the value of the variable anything in the dictionary var for the key "Something"Keys must be immutable objects,
TAG : python
Date : November 06 2020, 04:03 AM , By : Ahmed Ilyas
How to get all the dumps from a pickle file at once?
How to get all the dumps from a pickle file at once?
may help you . I was wondering if there is any way to collect all the Object dumps from pickle file at once. , add everything you want to save/load to a dictionary
TAG : python
Date : November 06 2020, 04:03 AM , By : Tech77
Python 2.7 - Conditional passing empty k,v pairs to dict instead of moving to next iterator
Python 2.7 - Conditional passing empty k,v pairs to dict instead of moving to next iterator
I wish this help you I think what you are saying is:For each tweet, if it contains special words generate a "line_score". If it doesn't contain any of the special words, don't generate the score at all.
TAG : python
Date : November 06 2020, 04:03 AM , By : Sergey Panfilov
Querying Pandas with a Dictionary of Constraints
Querying Pandas with a Dictionary of Constraints
With these it helps You can use lambda to perform advanced filtering in Pandas. Assumptions:
TAG : python
Date : November 06 2020, 04:03 AM , By : cipanu_
DRF - filter across 2 models
DRF - filter across 2 models
I think the issue was by ths following , I'm working with a legacy database where I have a serializer setup on Table A like so - , Extend your filter set and reference the field in the other model:
TAG : python
Date : November 06 2020, 04:03 AM , By : Gerhard Kuschnik
BeautifulSoup scanning HTML by tags, attributes, RegEx, and iterating
BeautifulSoup scanning HTML by tags, attributes, RegEx, and iterating
this will help I am expecting the code: , You're doing wrong because:
TAG : python
Date : November 06 2020, 04:03 AM , By : Raed Bettaieb
Python: Getting double directories
Python: Getting double directories
I wish this help you The problem occurs because of your recursive calls to dir_copy. I replaced dstfile with dstpath
TAG : python
Date : November 06 2020, 04:03 AM , By : Domenico
Nested Package: AttributeError: module 'app' has no attribute
Nested Package: AttributeError: module 'app' has no attribute
Any of those help I'm just learning python, coming from a C Java background, and I'm pretty confused by the import system. Just trying to run a simple test for learning purposes, but getting an error AttributeError: module 'app' has no attribute 'ex
TAG : python
Date : November 06 2020, 04:03 AM , By : Preeti Singh
Most Efficient Way in Python to Convert String with Whitespaces to DateTime for MySql
Most Efficient Way in Python to Convert String with Whitespaces to DateTime for MySql
seems to work fine I have data that comes in the following string format "dd Mmm YYYY, HH:mm" (e.g. "07 Aug 2008, 16:25") , Do you mean do the covert in Python?
TAG : python
Date : November 06 2020, 04:03 AM , By : Andrey Zakharov
Access inclusion_tag context variables before included template is rendered
Access inclusion_tag context variables before included template is rendered
like below fixes the issue If you only want the comment count, then you can just do this in the includes/comments.html template:{{ object_for_comments.comments.visible.count }}
TAG : python
Date : November 06 2020, 04:03 AM , By : mohamed yehia
Simplest way to upload a file to an up to date MediaWiki instance with Python?
Simplest way to upload a file to an up to date MediaWiki instance with Python?
hop of those help? It turns out that the one I hadn't tried worked. Using the documented examples for mwclient, uploading was successful.
TAG : python
Date : November 06 2020, 04:03 AM , By : user4568509
write nested data in JSON file from Django database
write nested data in JSON file from Django database
I wish this helpful for you You need to convert the data into a json here.Run this query first,which will display the data into the known format.
TAG : python
Date : November 06 2020, 04:03 AM , By : Albin Sunny
Python program Returning "None" as output
Python program Returning "None" as output
wish of those help random.shuffle() returns None. So, you are getting a list with element None.random.shuffle() shuffles a list in place. So print nums1.
TAG : python
Date : November 06 2020, 04:03 AM , By : Eran Ayalon
Rock paper scissors AI issue
Rock paper scissors AI issue
should help you out Your while loops are whats causing your problem. Simply change while to a if in your player_won and computer_won functions and it fixes the issue.
TAG : python
Date : November 06 2020, 04:03 AM , By : Santosh Rumba
Parse a date in a specific timezone with Python
Parse a date in a specific timezone with Python
Any of those help How can I take this date string: , There are three steps:
TAG : python
Date : November 06 2020, 04:03 AM , By : abi
Python TypeError: 'list' object is not callable with a dict dictionary, if boolean
Python TypeError: 'list' object is not callable with a dict dictionary, if boolean
With these it helps I have a dictionary that converts an index number to a node name. I am trying to check if the name is already in a list. I get an error list 'object not callable'. An image of my code is attached. , Change visited() to visited...
TAG : python
Date : November 06 2020, 04:03 AM , By : Kalyben
How to use regex substitute using different capture and match strings?
How to use regex substitute using different capture and match strings?
hope this fix your issue If you want to retain the pipe characters and match overlapping context, you need to use lookaround assertions. Because * is a greedy operator, it will consume as much as possible. In this case you can use a negated character
TAG : python
Date : November 06 2020, 04:03 AM , By : Dany Bruck
`LinAlgError: SVD did not converge` when attempting to rescale a 4D array using `skimage.transform.rescale`
`LinAlgError: SVD did not converge` when attempting to rescale a 4D array using `skimage.transform.rescale`
hop of those help? From the documentation:
TAG : python
Date : November 06 2020, 03:59 AM , By : Sem Seriou
How can I suppress 'None' output from yaml.dump, in Python?
How can I suppress 'None' output from yaml.dump, in Python?
fixed the issue. Will look into that further You can do this by subclassing YAMLObject and defining the to_yaml class method. For your particular example:
TAG : python
Date : November 06 2020, 03:59 AM , By : bekircem
Attempting to retrieve a Celery GroupResult using ID, with an AMQP backend
Attempting to retrieve a Celery GroupResult using ID, with an AMQP backend
fixed the issue. Will look into that further You are correct - you cannot recreate the group of results while using RabbitMQ - you will need to use a different results backend that does support this action, such as Redis.
TAG : python
Date : November 06 2020, 03:59 AM , By : Prasanta Bose
iF statement evaluating true incorrectly
iF statement evaluating true incorrectly
this will help actiontoString = ''.join([action]) will, in effect, create an exact copy of action (which is a string) and save it to a reference called actiontoString (another string, exactly the same). That's always going to be True.You probably nee
TAG : python
Date : November 06 2020, 03:59 AM , By : Manisha
QPushButton Default State
QPushButton Default State
wish helps you If you are using QtDesigner, with QPushButton selected go to Property Editor and scroll to the bottom, set the Default property checked OR inside your code, button.setDefault(True), this feature is specially for what you are looking fo
TAG : python
Date : November 06 2020, 03:59 AM , By : Mukesh Singh
PyPDF2 IOError: [Errno 22] Invalid argument on PyPdfFileReader Python 2.7
PyPDF2 IOError: [Errno 22] Invalid argument on PyPdfFileReader Python 2.7
Hope that helps Using open(file, 'rb') was causing the issue becuase PdfFileReader() does that automagically. I just removed the with statement and that corrected the problem.
TAG : python
Date : November 06 2020, 03:59 AM , By : Avik
Python Server with CherryPy and Mako Template - Nothing is displayed in the browser
Python Server with CherryPy and Mako Template - Nothing is displayed in the browser
may help you . I have this project. , In application.py you forgot to return the rendered template.
TAG : python
Date : November 06 2020, 03:59 AM , By : cyrustang
In this nested if/else statement the elif is not being run?
In this nested if/else statement the elif is not being run?
To fix this issue Below is a working example. You are taking your age in as a string and testing it compared to 18. This will almost always deliver the value true and display you are a male to fix this, you can take the age in as a int before you tes
TAG : python
Date : November 06 2020, 03:59 AM , By : Sam Maharjan
Negative pipe matching with regular expressions
Negative pipe matching with regular expressions
wish help you to fix your issue I have a string called, say, "I will kill you today" or something like that. I want to match all of the words that are not 'kill' or 'will'. I believe negative character classes will not work, because this is for a wor
TAG : python
Date : November 06 2020, 03:59 AM , By : Mike Hountich
Can't upgrade my version of pip. Something is wrong with my setup
Can't upgrade my version of pip. Something is wrong with my setup
fixed the issue. Will look into that further I was trying to install something using pip, and I keep getting this UserWarning error (see below). , I see you have
TAG : python
Date : November 06 2020, 03:59 AM , By : Jesse Weathers
Cleaning(Re.sub) when a text has too many new lines in python
Cleaning(Re.sub) when a text has too many new lines in python
wish helps you I have a text I want to clean. The problem is that there is too many new lines. When I open the text using text=open(file, 'r') and text=text.read()then I see too many new lines that is very difficult to clean. I want to remove the who
TAG : python
Date : November 06 2020, 03:59 AM , By : chandni patel
Can I style GtkBox margin/padding with CSS only?
Can I style GtkBox margin/padding with CSS only?
wish help you to fix your issue Not right now. GTK doesn't support margin properties on its widgets, and it only supports padding properties on widgets that draw a frame. (Which elements draw a frame can be a bit arbitrary, but Gtk.Box and Gtk.Label
TAG : python
Date : November 06 2020, 03:59 AM , By : NGM
Count Frequency of the nth item of each List within Larger List
Count Frequency of the nth item of each List within Larger List
I think the issue was by ths following , I have seen solutions for counting of values within a simple list, but what if you have a list of lists? , Make a new generator out of it and pass it to sum():
TAG : python
Date : November 06 2020, 03:59 AM , By : Ibukun
Python global variable empty in function
Python global variable empty in function
Hope that helps You are shadowing directory_name and file_list in your main function. Since those variables are not known in that scope, they get created locally. In order to operate on the global variables, you need to declare them global in your ma
TAG : python
Date : November 06 2020, 03:59 AM , By : Nizar Ahmad
Error while getting a file path using a dialog in PyQt
Error while getting a file path using a dialog in PyQt
I wish did fix the issue. Qtreturns all paths using / as the separator. You can use the abspath() method:
TAG : python
Date : November 06 2020, 03:59 AM , By : zeroonehacker
Perform function on pairs of rows in Pandas dataframe
Perform function on pairs of rows in Pandas dataframe
like below fixes the issue You can groupby by "adjacency" in one go (without mutating the DataFrame):
TAG : python
Date : November 06 2020, 03:59 AM , By : Lastly Yeah
save() prohibited to prevent data loss due to unsaved related object
save() prohibited to prevent data loss due to unsaved related object
this will help This was introduced in Django 1.8. Previously you could assign not saved instance to One-To-One relation and in case of fail it was silently skipped. Starting from Django 1.8 you will get error message in this case. Check a documentati
TAG : python
Date : November 06 2020, 03:59 AM , By : Hiba Okar
Find two strings next to a keyword with re in python
Find two strings next to a keyword with re in python
this will help I need to find two strings next to a keyword. Here is an example string , Note that this matches exactly two image strings:
TAG : python
Date : November 06 2020, 03:59 AM , By : Faruque Ahmad
Serializing saves only the last entered value GUI tkinter
Serializing saves only the last entered value GUI tkinter
it helps some times Sorry for the past incorrect answer. I think the problem is that your entry_1 function creates entry boxes with the same name. This means when you try getting the text in it, it gets the text of the last one only. Here is the full
TAG : python
Date : November 06 2020, 03:59 AM , By : Chiloh Harville
indexing column value by row value with pandas
indexing column value by row value with pandas
I think the issue was by ths following , , Example usage :
TAG : python
Date : November 06 2020, 03:59 AM , By : Yc Ou
Reading a text file then storing first and third word as key and value respectively in a dictionary
Reading a text file then storing first and third word as key and value respectively in a dictionary
Hope that helps Your first call to .read() consumes the entire file contents, leaving nothing for the loop to iterate over. Remove it. And that .readline() call does nothing useful. Remove that too.
TAG : python
Date : November 06 2020, 03:59 AM , By : user4568149
Python 3.5 splitlines for multiline string containing backslashes
Python 3.5 splitlines for multiline string containing backslashes
wish help you to fix your issue Try storing your input as a raw string, then all '\n' characters will automatically be escaped:
TAG : python
Date : November 06 2020, 03:59 AM , By : Omar Battisha
Python OpenCV HoughLinesP Fails to Detect Lines
Python OpenCV HoughLinesP Fails to Detect Lines
Hope that helps There's quite a bit wrong here so I'll just start from the beginning.Ok, first thing you do after opening an image is tresholding. I recommend strongly that you have another look at the OpenCV manual on tresholding and the exact meani
TAG : python
Date : November 06 2020, 03:59 AM , By : ionutgyn
python random sum quiz
python random sum quiz
around this issue regardless on whether or not the user inputs the correct answer, the program outputs "incorrect".
TAG : python
Date : November 05 2020, 07:07 PM , By : Edward Egros
Type hints: solve circular dependency
Type hints: solve circular dependency
Does that help You can use a forward reference by using a string name for the not-yet-defined Client class:
TAG : python
Date : November 05 2020, 07:07 PM , By : jaco8
Python: a way to avoid <<print "variable_name =", variable_name>>?
Python: a way to avoid <<print "variable_name =", variable_name>>?
hope this fix your issue The problem you're going to run into with trying to implement something like name_print(variable_name) is that when the function is called, only its value is passed. The function has no idea of the name of the variable in any
TAG : python
Date : November 05 2020, 07:07 PM , By : Anthony Elumeze
Creating a panda DataFrame from dictionary with multiple keys and value (list) of different lengths
Creating a panda DataFrame from dictionary with multiple keys and value (list) of different lengths
wish helps you I have a dictionary of with multiple keys with values(list) that do not have the same length. I would like to read them into a pandas DataFrame.I would like the keys to be the column names and the values to be my rows. Assuming that I
TAG : python
Date : November 05 2020, 07:07 PM , By : CrEeP
compare two lists of files, ignoring file extension in one list
compare two lists of files, ignoring file extension in one list
I wish this helpful for you I have two lists
TAG : python
Date : November 05 2020, 07:07 PM , By : l-value
library on pythonpath not accessible
library on pythonpath not accessible
This might help you The folders on the PYTHONPATH should contain folders that are python packages, and not be the paths to the packages themselves.In this case, if my_scripting_library is your package, and '/home/cchilders/scripts/python/my_scripting
TAG : python
Date : November 05 2020, 07:07 PM , By : kevinf.pr
Working with ctypes return values
Working with ctypes return values
Any of those help Posting an actual example of working C++ code would help, but I'll just create something similar as a demo.Here's brief C++ DLL source. Since ctypes wraps C functions, not C++, the functions are declared extern "C" to work properly.
TAG : python
Date : November 05 2020, 07:07 PM , By : Phillip Zentz
Storing data from API inside a function
Storing data from API inside a function
should help you out Some quite simple question for most of you I think.. I am trying to save some data that i get from an API URL request inside one of my functions... , you can store the result in a variable and pass it to the method.
TAG : python
Date : November 05 2020, 07:07 PM , By : primnull
What is the default encoding for Python 2.7.8?
What is the default encoding for Python 2.7.8?
will help you Using codecs.open('f.txt','r',encoding=None) returns byte strings instead of Unicode strings when the file is read. It doesn't try to decode the file data with an encoding at all. It is equivalent to open('f.txt','r'). The length you re
TAG : python
Date : November 05 2020, 07:07 PM , By : Kalimachus
Formatting with the map() function in Python
Formatting with the map() function in Python
I wish this help you I'm writing code to convert mach to feet/second and I want to use the map function with the lambda operator to convert it. I have a parameter that's a list called machList. I'm able to convert successfully, but I'm having trouble
TAG : python
Date : November 05 2020, 07:07 PM , By : Glenier
search for string embedded in {} after keyword
search for string embedded in {} after keyword
fixed the issue. Will look into that further How can I get the string embedded in {} after a keyword, where the number of characters between the keyword and the braces {} is unknown. e.g.: , Use re.findall
TAG : python
Date : November 05 2020, 07:07 PM , By : Graphik
Python: send arguments to function in dictionary
Python: send arguments to function in dictionary
wish of those help It's possible, but you have to refer to the function (e.g. foo) without already calling it (e.g. foo()).
TAG : python
Date : November 05 2020, 07:07 PM , By : dudebro
Multiple instances of mock object
Multiple instances of mock object
I think the issue was by ths following , Note that the name is returned by A's get_namemethod. As such, you can override that method with a side_effect that returns the name that the method was called with. It seems like what you really want isn't mu
TAG : python
Date : November 05 2020, 07:07 PM , By : zubin_rafi
force python pyside splitter to start window center
force python pyside splitter to start window center
I wish this helpful for you How can I force the splitter to be positioned in the center of the window at the start? As you can see in the code below it favors the right side because of the button being small. however I would like to have the splitter
TAG : python
Date : November 05 2020, 07:07 PM , By : same blak
Interpreting feature importance values from a RandomForestClassifier
Interpreting feature importance values from a RandomForestClassifier
This might help you In short you do not. Decision trees (building block of random forest) do not work this way. If you work with linear models then there is quite simple distinction if feature is "positive" or "negative", because the only impact it c
TAG : python
Date : November 05 2020, 07:07 PM , By : Samuel C
panda add several new columns based on values from other columns at the same time?
panda add several new columns based on values from other columns at the same time?
I wish did fix the issue. I wouldn't use a lambda function. Simple vectorized implementation is both faster and easier to read.
TAG : python
Date : November 05 2020, 07:07 PM , By : Lounge Intruder

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