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PYTHON QUESTIONS

How to detect a zebra crossing at the picture?
How to detect a zebra crossing at the picture?
fixed the issue. Will look into that further Firstly try to get only ROI part from complete image then you can use template matching to check for similar crossing (https://docs.opencv.org/master/d4/dc6/tutorial_py_template_matching.html).enter image
TAG : python
Date : August 26 2020, 10:00 AM , By : tdfw
problem with python: undefined symbol: sqmI
problem with python: undefined symbol: sqmI
With these it helps I was able to install and get it working on my machine with a few tweaks... It's definitely not ideal, hopefully the package maintainers can update the installation instructions.Here's what I did:
TAG : python
Date : August 26 2020, 09:00 AM , By : martin
Pytest - ModuleNotFoundError: No module named 'x'
Pytest - ModuleNotFoundError: No module named 'x'
To fix the issue you can do You need a __init__.py in the module directory.Here's a typical project structure:
TAG : python
Date : August 26 2020, 07:00 AM , By : Sarthak
How to control Servo-Motor from Arduino with Raspberry
How to control Servo-Motor from Arduino with Raspberry
wish of those help Sounds like you might have a continuous rotation (CR) servo. Even if you don't, all servos have different PWN ranges, so what servo you are using is a detail I would need to give you a better answer (Sorry for asking for clarificat
TAG : python
Date : August 26 2020, 01:00 AM , By : Brently Davis
How to get if a key is pressed pygame
How to get if a key is pressed pygame
Any of those help The current state of the keys can be get by pygame.key.get_pressed().Get the sate of the keys keys = pygame.key.get_pressed() and evaluate if the UP or DOWN is pressed by if keys[pygame.K_UP]: respectively if keys[pygame.K_DOWN]:, c
TAG : python
Date : August 26 2020, 12:00 AM , By : narayana nagubathula
Function with "for" loop
Function with "for" loop
help you fix your problem The problem with your code is: you're using or instead of and, its impossible for each character to equal all 4 inputs You're missing a starting quote for d you also print the output on every iteration of the loop
TAG : python
Date : August 25 2020, 10:00 PM , By : B. Payne
Checking inputs against list and appending to list of lists
Checking inputs against list and appending to list of lists
like below fixes the issue Since p is sorted, you can use bisect for this (with O(log(N)) complexity):
TAG : python
Date : August 25 2020, 05:00 PM , By : lettermletterz
split() not producing expected results
split() not producing expected results
I think the issue was by ths following , str.split() splits using a fixed delimiter, not a regular expression. You need to use re.split().
TAG : python
Date : August 25 2020, 03:00 PM , By : Dennis
How to detect a collision between selected object and other objects in the list?
How to detect a collision between selected object and other objects in the list?
around this issue The best way to implement this is to convert your car into a PyGame Sprite object. This would allow the code to use a SpriteGroup and the powerful groupcollide functions.In lieu of this, it should be possible to simply loop through
TAG : python
Date : August 25 2020, 05:00 AM , By : JGex
Can we give a custom metric for cross-validation with GLM in H2O?
Can we give a custom metric for cross-validation with GLM in H2O?
I wish did fix the issue. If you are definitively working on h2o, then the suitable option to not leave the R interface with h2o would be to use the options keep_cross_validation_models = TRUE, keep_cross_validation_predictions = TRUE,. from this you
TAG : python
Date : August 24 2020, 09:00 PM , By : user6099938
In this python code, in the string why are there the values if {1}, {0} and {2}?
In this python code, in the string why are there the values if {1}, {0} and {2}?
I think the issue was by ths following , most likely no reason -- or the result of a refactor, if you do them in-order you don't need to specify the numeric positions (since python2.7)so this works fine:
TAG : python
Date : August 24 2020, 07:00 PM , By : Jublygoop
Filter pandas dataframe rows containing non-ascii values
Filter pandas dataframe rows containing non-ascii values
this will help Not sure about the performance, but you can try to encode the string and ignore the errors, then compare the len of the encoded string to the original one like:
TAG : python
Date : August 24 2020, 06:00 PM , By : Xanat Licona
Is there a way to remove duplicate rows with a specific condition within Pandas?
Is there a way to remove duplicate rows with a specific condition within Pandas?
To fix the issue you can do I have a dataframe (df) that contains some overlapping time rows. I would like to delete the row with the longer duration, keeping the row with the shorter duration from the same ID. (to reduce overlapping) , Use sort_valu
TAG : python
Date : August 24 2020, 03:00 PM , By : DaHa
Python: Reverse words in each paragraph of a file without changing the order of paragraph?
Python: Reverse words in each paragraph of a file without changing the order of paragraph?
wish of those help I want to generate a text_out.txt file by reversing words in text_in.txt file like this: , You need:
TAG : python
Date : August 24 2020, 01:00 PM , By : Tryggvi Hákonarson
How to replace spaces in URL having path parameter, with a hyphen or an underscore
How to replace spaces in URL having path parameter, with a hyphen or an underscore
help you fix your problem I am sorry if this Q makes no sense , but is there a way to replace spaces with hyphen in URL's(only) having used path parameter to build it ? , The string with % in needs unquoting if you want the raw version.
TAG : python
Date : August 24 2020, 01:00 PM , By : tripleestew
How to avoid SSL certification error in Selenium Webdriver using Python?
How to avoid SSL certification error in Selenium Webdriver using Python?
like below fixes the issue The problem is on get(), www.google.com is not a valid url. For not secure you can use http rather than https
TAG : python
Date : August 24 2020, 08:00 AM , By : أيمن أحمد
Trying to test if the given string is a palindrome by words
Trying to test if the given string is a palindrome by words
hop of those help? You need to do split in order to word-wise comparison.In addition, take out ' ' from bad_character and fixing some indentation will do:
TAG : python
Date : August 24 2020, 08:00 AM , By : FalseSky
How to store and load training data comprised 50 millions 25x25 numpy arrays while training a multi-class CNN model?
How to store and load training data comprised 50 millions 25x25 numpy arrays while training a multi-class CNN model?
Does that help How to store np.arrays() on disk ?Storing them in a HDF5 file is a good idea. The basic HDF5 type is a Datasets, which contain multidimensional arrays of an homogeneous type. HDF5 Datasets files can be assembled together into HDF5 Grou
TAG : python
Date : August 24 2020, 02:00 AM , By : Brian Chinn
Why lambda function in list comprehension is slower than in map?
Why lambda function in list comprehension is slower than in map?
wish help you to fix your issue Because in your first code snippet the lambda is created only once and executed 100000 times while on the second it is created and executed in every iteration.To be honest I am surprised that the difference is not even
TAG : python
Date : August 24 2020, 02:00 AM , By : Dono Kasino
AWS Lambda trigger on S3 bucket to Neptune "Failed to start new load for the source"
AWS Lambda trigger on S3 bucket to Neptune "Failed to start new load for the source"
it fixes the issue According to documentation: Max concurrent load limit is oneSo probably you need to introduce some queue in your upload process. Or it may be
TAG : python
Date : August 24 2020, 01:00 AM , By : mfairouz
How to load a 16-bits/channel RGB(A) image with PIL?
How to load a 16-bits/channel RGB(A) image with PIL?
I hope this helps . PIL doesn't support multi-channel 16-bit/channel images - see documentation. I would suggest you use OpenCV with the cv2.IMREAD_UNCHANGED flag like this:
TAG : python
Date : August 23 2020, 11:00 PM , By : SAHIL MANGAL
Importing files with Python - How to skip if file doesn't exist?
Importing files with Python - How to skip if file doesn't exist?
I hope this helps you . You can use try/except to continue in case of errors:
TAG : python
Date : August 23 2020, 11:00 PM , By : Adam Gill
Python script not exiting on sys.exit()
Python script not exiting on sys.exit()
I wish did fix the issue. Exception is never raised because os.system not raising exceptions. Please use subprocess instead Python3 subprocess
TAG : python
Date : August 23 2020, 08:00 PM , By : SVi
Python: How to increment a global variable using a function
Python: How to increment a global variable using a function
this one helps. , You need:
TAG : python
Date : August 23 2020, 08:00 PM , By : Meneimoh
How to find duplicate values and corresponding value into new columns
How to find duplicate values and corresponding value into new columns
help you fix your problem I have data frame like this where country and name where ever it is unique for same ID have to be in new columns. , You can do the following,
TAG : python
Date : August 23 2020, 05:00 PM , By : Milos Kujundzic
Extract values from tuples into column
Extract values from tuples into column
it fixes the issue You can use df.explode:
TAG : python
Date : August 23 2020, 05:00 PM , By : TRoberts
Is the __init__.py really not necessary for python 3.7 packages?
Is the __init__.py really not necessary for python 3.7 packages?
will be helpful for those in need Quick answer, Yes, thanks to the Implicit Namespace Packages you dont need __init__.py files anymore. But some tools of the standart library including unittest or setup tools still needs __init__.py files.In most of
TAG : python
Date : August 23 2020, 03:00 PM , By : Thomas Ggt
Pandas dataframe - Formatting certain rows or cells to 2 d.p
Pandas dataframe - Formatting certain rows or cells to 2 d.p
help you fix your problem With the following dataframe, I would like to reformat the first two rows to 2 decimal places. , Values are changed to strings, but it is possible:
TAG : python
Date : August 23 2020, 12:00 PM , By : amel
How to find title="xyz" element with Selenium (Python)
How to find title="xyz" element with Selenium (Python)
hope this fix your issue I am trying to click an element with Selenium, that has a specific title attribute. I have tired do use an xpath before, however, the problem is that there are two buttons on the website with the same xpath. If one button is
TAG : python
Date : August 23 2020, 07:00 AM , By : Razvan Hagea
How to manage string in python
How to manage string in python
fixed the issue. Will look into that further The problem: , You can do this using:
TAG : python
Date : August 23 2020, 02:00 AM , By : Michael Schwarz
RuntimeWarning: coroutine 'main' was never awaited error
RuntimeWarning: coroutine 'main' was never awaited error
will help you Take a look at telethon documentation, see how it starts event loop:
TAG : python
Date : August 23 2020, 12:00 AM , By : Snook
Reshape a dataframe for all values in a column
Reshape a dataframe for all values in a column
it fixes the issue Solution for pandas under 0.24+ with DataFrame.melt first, then Series.str.split and DataFrame.stack for explode splitted values by ,:
TAG : python
Date : August 22 2020, 07:00 PM , By : Walter Sywotschka
How to reuse an expression in a comprehension expression?
How to reuse an expression in a comprehension expression?
it helps some times Yes! Python 3.8 introduces the "Assignment operator" :=, which allows you to define a variable within the local scope of a single expression (e.g. a comprehension). In your example, you would do this:
TAG : python
Date : August 22 2020, 11:00 AM , By : Alec Williams
query to fetch x starting with letter x having highest x
query to fetch x starting with letter x having highest x
With these it helps You can annotate the QuerySet with the number of related Articles and then filter, like:
TAG : python
Date : August 22 2020, 10:00 AM , By : dai pham quoc
I want to upload the image to the database using default form in django but the image is not uploaded.It shows "No
I want to upload the image to the database using default form in django but the image is not uploaded.It shows "No
will be helpful for those in need forms.py , You have to add upload_to:
TAG : python
Date : August 22 2020, 06:00 AM , By : user1654
pip command is not working after upgrade from 19.2.3 to 20.0
pip command is not working after upgrade from 19.2.3 to 20.0
hop of those help? pip command is not working after an upgrade from 19.2.3 to 20.0. Facing this issue in python. How to go back to previous version of pip?
TAG : python
Date : August 22 2020, 12:00 AM , By : Luis Angel Cortina A
Sqlalchemy: How to update a column every 24 hours?
Sqlalchemy: How to update a column every 24 hours?
seems to work fine you could insert an additional column, in which you write for which date allowed_access_per_day was set. In the query you check then, if it is from the previous day.
TAG : python
Date : August 21 2020, 08:00 PM , By : jason kinney
Problems with loading csv with pandas
Problems with loading csv with pandas
Hope that helps My code: , Try these
TAG : python
Date : August 21 2020, 05:00 PM , By : Ishita SaHa
Call a function upon python logger entry being created
Call a function upon python logger entry being created
To fix the issue you can do If MagicMock is a logger object and implement all required methods (https://docs.python.org/3/library/logging.html) you can add use the following:
TAG : python
Date : August 21 2020, 03:00 PM , By : Yogesh Kulkarni
How can I parse the below XML data using Python?
How can I parse the below XML data using Python?
I think the issue was by ths following , You do this all in a just a couple of statements using an xpath query. Something like:
TAG : python
Date : August 21 2020, 01:00 PM , By : user6100138
Sharing python objects (e.g. Pandas Dataframe) between independently running python scripts
Sharing python objects (e.g. Pandas Dataframe) between independently running python scripts
hope this fix your issue You already have quite the right sense of what you can do to use your data.The best solution depends on your actual needs, so I will try to cover the possibilities with a working example.
TAG : python
Date : August 21 2020, 07:00 AM , By : Francisco Martin Rod
How to sum certain floats in a list
How to sum certain floats in a list
Hope this helps You can use a generator in sum() and isinstance() to check if something is a float.
TAG : python
Date : August 21 2020, 12:00 AM , By : jukker
Reference a label inside a frame
Reference a label inside a frame
To fix the issue you can do Your label is not defined as a class attribute. To do this add the self. prefix. Currently your label is just a local variable to __init__. Local variables cannot be accessed from anything outside of the function/method. Y
TAG : python
Date : August 20 2020, 05:00 PM , By : Ioni Ca.
Adding a time column to a DataFrame based on another DataFrame
Adding a time column to a DataFrame based on another DataFrame
To fix this issue I think you need Series.repeat.
TAG : python
Date : August 20 2020, 04:00 PM , By : Raven19528
Recursive Minimax Function for Tic Tac Toe
Recursive Minimax Function for Tic Tac Toe
With these it helps I have recently being try to make a tic tac toe game using the mini max algorithm. I first created a board, then two player. Afterwards, I changed one of the players into the algorithm. I tried using something similar to this java
TAG : python
Date : August 20 2020, 04:00 PM , By : James Perreault
Executing an anagram checker algorithm in less than a second
Executing an anagram checker algorithm in less than a second
Hope that helps I have created this algorithm to check whether two strings are anagram of each other. In this exercise, I consider two strings to be anagram of each other if they have the same characters or if they differ just by one. For example mat
TAG : python
Date : August 20 2020, 03:00 PM , By : Victor E
How to find the sum of all nodes in a tree
How to find the sum of all nodes in a tree
around this issue Instead of using indexing to lookup the child nodes, you can use a for loop:
TAG : python
Date : August 20 2020, 03:00 PM , By : Abhishek Pandey
How does Numpy deal with memory allocation when passed as arguments or returned?
How does Numpy deal with memory allocation when passed as arguments or returned?
may help you . You mentioned you are running in IDLE.The interactive session will save a reference to the last returned value in the _ variable, which means your numpy array has a reference count preventing it from being collected immediately. Deleti
TAG : python
Date : August 20 2020, 01:00 PM , By : Gerry Murphy
How to write to a file and leave an empty line every two records?
How to write to a file and leave an empty line every two records?
I hope this helps you . Python 3.7 I have a list with cities and i want to write them in a text file. Is there a way I can leave an empty line every two cities? , You should do something like this:
TAG : python
Date : August 20 2020, 12:56 PM , By : John Hug
Method for identifying arrays within a NumPy array
Method for identifying arrays within a NumPy array
hop of those help? I'm still having problems understanding your case, but may be this example will help illustrate how arrays are storedMake a small 3d array:
TAG : python
Date : August 20 2020, 12:56 PM , By : Albert Coronado
How to login in facebook with python
How to login in facebook with python
I think the issue was by ths following , Use webdriver not webbrowser. Just changing your code to use that instead fixes your problem. The full code is below.
TAG : python
Date : August 20 2020, 12:56 PM , By : Navaneeth
How do I use `this` in constructors?
How do I use `this` in constructors?
To fix this issue You cannot access this in neither the constructor head nor in the initializer list (learn more about what that is here).If you want to do it, you will have to initialize your child variable in the constructor body:
TAG : python
Date : August 20 2020, 12:56 PM , By : Harshit Dugar

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