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PYTHON QUESTIONS

Scrapy: Python cannot find the spider
Scrapy: Python cannot find the spider
I wish this helpful for you I'm trying to follow the Scrapy tutorial, but I'm stuck in one of the first step. I think I have correctly created the spider: , You need to be in the directory that contains scrapy.cfg:
TAG : python
Date : November 24 2020, 05:44 AM , By : MannyP123
get the values in a given radius from numpy array
get the values in a given radius from numpy array
should help you out I want to recover a "buffer" around a given value in a 2-D numpy array in python. The idea is to select all the values comprised within a given radius and then mask them. It would be something like: , numpy slicing does this for y
TAG : python
Date : November 24 2020, 05:44 AM , By : erez keller
Is it possible to duplicate a pipe in Python, so that it has one write end but two read ends?
Is it possible to duplicate a pipe in Python, so that it has one write end but two read ends?
wish helps you Data from a pipe can only be read once. You can, however, use an intermediate process that simply copies the data and writes it to two different file descriptors. On Unix systems, this is done by the standard tool tee. An example in PO
TAG : python
Date : November 24 2020, 05:44 AM , By : Keycode
Why does wget use Firefox cookies to login on an authenticated webpage?
Why does wget use Firefox cookies to login on an authenticated webpage?
this one helps. wget can and does work independently of Firefox. You are telling it to load your Firefox cookies (--load-cookies=$workingDirectory/cookies.txt), so it does!There are other options if you don't want to use Firefox. First of all, you ca
TAG : python
Date : November 24 2020, 05:44 AM , By : actbyl
python import behaviour: different objects from same file?
python import behaviour: different objects from same file?
will be helpful for those in need Modules are cached in the dicitonary sys.modules using their dotted names as keys. Since you are importing the same module by two different dotted names, you end up with two copies of this module, and also with two c
TAG : python
Date : November 24 2020, 05:44 AM , By : Nawwaf
Create YoY Graph with Matplotlib
Create YoY Graph with Matplotlib
help you fix your problem EDIT: You should define a function like the following because the limitation is that matplotlib doesn't allow you to share the y-axis when using twinx which is what it sounds like the problem might be:
TAG : python
Date : November 24 2020, 05:44 AM , By : Luisy
Safe use of eval() or alternatives - python
Safe use of eval() or alternatives - python
it fixes the issue I'm always weary of using eval in any language but I can't think of a better way to do 2 things. From everything I've read evAl is evIl (that was bad). Any thoughts are appreciated. I have module with a dictionary that either calls
TAG : python
Date : November 24 2020, 05:44 AM , By : Jasper Chan
Unix change desktop background seamlessly
Unix change desktop background seamlessly
With these it helps Well, you can change the current wallaper (in Gnome 3 compatible desktops) by running
TAG : python
Date : November 24 2020, 05:44 AM , By : Sharon Zhang
Profiling Python code that uses multiprocessing?
Profiling Python code that uses multiprocessing?
seems to work fine In my understanding the cProfile module doesn't play well with multiprocessing on the command line. (See Python multiprocess profiling.)One way to work around this is to run the profiler from within your code -- in particular, you'
TAG : python
Date : November 24 2020, 05:44 AM , By : Andy Hook
How to query a database after render_template
How to query a database after render_template
this will help The "easy" way (no ajax) is to have a link next to each entry from table 1 that points to a new page that contains the related information from table 2. Example:
TAG : python
Date : November 24 2020, 05:44 AM , By : user4638928
shifting right in for loop over indices in python
shifting right in for loop over indices in python
I wish this helpful for you It's best to use a collections.deque for this:
TAG : python
Date : November 24 2020, 05:44 AM , By : Angy Arrebola
Is there a way to switch code indentation from tabs to spaces across the project, and to keep 'hg annotate' functionalit
Is there a way to switch code indentation from tabs to spaces across the project, and to keep 'hg annotate' functionalit
I wish this help you If you were to do the replacement of each tab with 4 spaces, you could still get a reasonably correct result from annotate, just use the switch that ignores changes in whitespace:
TAG : python
Date : November 24 2020, 05:44 AM , By : Darklyn
Disable/Close/Quit/Exit Terminal screen from python on Geany (Ubuntu)
Disable/Close/Quit/Exit Terminal screen from python on Geany (Ubuntu)
should help you out The following will work.Click Edit>Preferences>Tools In the terminal field change the value to
TAG : python
Date : November 24 2020, 01:01 AM , By : Hammer
for i in xrange() not running the complete script
for i in xrange() not running the complete script
this will help I have two sliders: , Eric.This line of yours:
TAG : python
Date : November 24 2020, 01:01 AM , By : user2957652
ImportError ropevim using ropevim plugin in vim
ImportError ropevim using ropevim plugin in vim
wish helps you I know it might not be the answer you're looking for, but I'm using klen/python-mode plugin with rope included and it's working like a charm.I'm also using Vim-Plug to manage my plugins and it's as easy as:
TAG : python
Date : November 24 2020, 01:01 AM , By : user2957651
How to read each line from a file into list word by word in Python
How to read each line from a file into list word by word in Python
it fixes the issue I'm trying to read line into a list where each word on that line is different argument. For example when my text file contains: , You could use the following list comprehension
TAG : python
Date : November 24 2020, 01:01 AM , By : korodilu
Creating Unique Names
Creating Unique Names
like below fixes the issue One thing you could do is to compute a unique hash of the files, e.g. with MD5 or SHA1 (or any other), cf. this article. For a large number of files this can become quite slow, though.But you don't really see to touch the f
TAG : python
Date : November 24 2020, 01:01 AM , By : user2957621
python split a string when a keyword comes after a pattern
python split a string when a keyword comes after a pattern
this will help You could remove the first part until no more dashes remain; that'd be the domain name to remove from the hostname:
TAG : python
Date : November 24 2020, 01:01 AM , By : user2957575
Same Python code returns different results for same input string
Same Python code returns different results for same input string
hop of those help? Below code is supposed to return the most common letter in the TEXT string in the format: , This can also be done without Counter or OrderedDict:
TAG : python
Date : November 24 2020, 01:01 AM , By : diego.oca
Call a Flask function every few minutes
Call a Flask function every few minutes
Hope this helps On my HTML page I've got a span that gets the value of the function getStatus(): , flask_app.py add a route to your getStatus method
TAG : python
Date : November 24 2020, 01:01 AM , By : user2957524
Python: Using Ghost for dynamic webscraping
Python: Using Ghost for dynamic webscraping
wish helps you Note, I post this as answer since my current solution is to use the iMacros extension and save the webpage locally and then perform the scraping on the now static data using BeautifulSoup.The original question was on how to use Ghost t
TAG : python
Date : November 24 2020, 01:01 AM , By : skimm
How to make while iteration faster?
How to make while iteration faster?
around this issue Apart from what @Kasra suggested the other slower part in your code is deletion of item at 0th index, for lists it's O(N) operation. A better data-structure for this is collections.deque which allows fast insertion and deletion on e
TAG : python
Date : November 24 2020, 01:01 AM , By : user2957451
Struggling to resolve "a float is required error" in python
Struggling to resolve "a float is required error" in python
wish helps you The problem is visible in your traceback. Usually the last line contains the culprit, while the previous lines show how you got there:
TAG : python
Date : November 24 2020, 01:01 AM , By : user2957448
Read data with NAs into python and calculate mean row-wise
Read data with NAs into python and calculate mean row-wise
With these it helps There are a number of different ways you could read in the data from the file using NumPy. Here's one way using np.genfromtxt. The names in the first column become NumPy nan values, as do any other non-float strings in your file:
TAG : python
Date : November 23 2020, 01:01 AM , By : user2957331
How to print telnet response line by line?
How to print telnet response line by line?
This might help you You can use tn.read_until("\n") in a loop in order to read one line durint execution of your telnet command
TAG : python
Date : November 23 2020, 01:01 AM , By : user2957302
Pylint: Avoid checking INSIDE DOCSTRINGS (global directive / rcfile)
Pylint: Avoid checking INSIDE DOCSTRINGS (global directive / rcfile)
around this issue The problem is that the thing you are asking about is not configurable at all. Moreover, according to the PEP8:
TAG : python
Date : November 23 2020, 01:01 AM , By : user2957284
Sending MIDI messages using Python (on Ubuntu)
Sending MIDI messages using Python (on Ubuntu)
Does that help Ok, well, I got the MIDI in/out working, by creating a small script that echoes whatever is played on the keyboard, with certain delay:
TAG : python
Date : November 23 2020, 01:01 AM , By : user2957252
Generate Dictionary in Python at run time
Generate Dictionary in Python at run time
Hope this helps I want to generate dictionary in python dynamically. , You can use the dict constructor
TAG : python
Date : November 23 2020, 01:01 AM , By : code8888
code is cluttered by try-except in Python
code is cluttered by try-except in Python
wish help you to fix your issue I have a series of processes to run on bunch of texts. The process it may fail in whatever reasons. , You could put all your processes in a loop:
TAG : python
Date : November 23 2020, 01:01 AM , By : user2957209
Python class inheritance - spooky action
Python class inheritance - spooky action
I hope this helps . The aedion.project module does two things:
TAG : python
Date : November 23 2020, 01:01 AM , By : user2957180
Why is a Python multiprocessing daemon process not printing to standard output?
Why is a Python multiprocessing daemon process not printing to standard output?
Does that help You can get a clearer picture of the order of events by turning on logging by placing
TAG : python
Date : November 23 2020, 01:01 AM , By : Xenocide8998
How to feed numeric data into a classifier?
How to feed numeric data into a classifier?
I hope this helps you . From the doc:
TAG : python
Date : November 23 2020, 01:01 AM , By : user2957108
How to unambiguously identify a Model as a lowercase string in Django
How to unambiguously identify a Model as a lowercase string in Django
it should still fix some issue I am afraid you will have to iterate over app's models list but you can cache it:
TAG : python
Date : November 23 2020, 01:01 AM , By : gdwn
How to get only one specific line from subprocess output
How to get only one specific line from subprocess output
wish helps you I know how to search if specific word exists in subprocess output. But how can I print out only one specific line, if I know this line always looks like:
TAG : python
Date : November 23 2020, 01:01 AM , By : user2957064
Python network communication with encryption and password protection
Python network communication with encryption and password protection
should help you out if you have no problem rolling out a key file to all nodes ...simply throw your messages into AES, and move the output like you moved the unencrypted messages ...
TAG : python
Date : November 22 2020, 03:03 PM , By : strand
with urllib urlopen read function but get none
with urllib urlopen read function but get none
Hope this helps Hum I try with the python package requests and first have an error : requests.exceptions.TooManyRedirects: Exceeded 30 redirects.It seems it redirects from url to another and loop like that. Maybe it failed with urllib. Also I checked
TAG : python
Date : November 22 2020, 03:03 PM , By : user2956942
django could not find database in ubuntu
django could not find database in ubuntu
This might help you In my settings I have: , where can I inspect and find my database??
TAG : python
Date : November 22 2020, 03:03 PM , By : user2956906
How to replace a character in a string with a non ascii character in python?
How to replace a character in a string with a non ascii character in python?
To fix this issue I want to replace the number sign () with a character similar to that called music sharp sign (♯). I tried the following line but didnt work.
TAG : python
Date : November 22 2020, 03:03 PM , By : user2956801
Self learning data evaluation in Python
Self learning data evaluation in Python
it helps some times Your task is called classification and is a part of machine learning. This seems to be a very brief introduction to this field.I don't know of a handy python library (I'm not saying there are none, but I don't use such things so I
TAG : python
Date : November 22 2020, 03:03 PM , By : user2956773
Django: UnicodeDecodeError while trying to read template 500.html
Django: UnicodeDecodeError while trying to read template 500.html
this one helps. It might be that your 500 template is not saved in UTF-8 encoding. Since you are using Komodo Edit, try to change its encoding to utf8 in:
TAG : python
Date : November 22 2020, 03:03 PM , By : rinchu
how can you Import an os variable into PYTHON and have it update?
how can you Import an os variable into PYTHON and have it update?
To fix this issue Just use a plain text file to store your pyserv data. First create the pyserv data file. Eg,
TAG : python
Date : November 22 2020, 03:03 PM , By : helmar
Browse Folders to open a file in python
Browse Folders to open a file in python
Any of those help This is pretty OS dependent. On UNIX OSes (Linux, Mac OS) the xdg-open and open commands might do what you want.Assuming the path to the file is in the path_to_file variable, you could use:
TAG : python
Date : November 22 2020, 03:03 PM , By : user2956738
sql select group by a having count(1) > 1 equivalent in python pandas?
sql select group by a having count(1) > 1 equivalent in python pandas?
this will help Instead of writing email_cnt[email_cnt.size > 1], just write email_cnt[email_cnt > 1] (there's no need to call.size again). This uses the Boolean series email_cnt > 1 to return only the relevant values of email_cnt.For example:
TAG : python
Date : November 22 2020, 03:03 PM , By : user2956733
Why Insert command when button clicked OpenERP
Why Insert command when button clicked OpenERP
this will help I'm pretty sure that this _inherit='product.product' in your class is breaking the things. Your original form (not the one you try to open with the button) is trying to save the object before executing the button's action. As the model
TAG : python
Date : November 22 2020, 10:56 AM , By : user2956696
Pandas dataframe from nested dictionary to melted data frame
Pandas dataframe from nested dictionary to melted data frame
This might help you if i understand properly your question, i think you can simply do the following :
TAG : python
Date : November 22 2020, 10:56 AM , By : michaelvv
Which is more efficient in Python: list.index() or dict.get()
Which is more efficient in Python: list.index() or dict.get()
This might help you I'm trying to solve a problem on LeetCode. I'm using Python and I made an attempt as follows: , Is list.index() slower than dict.get()?
TAG : python
Date : November 22 2020, 10:56 AM , By : ASno
Xor bits in python
Xor bits in python
this will help First you need to zip your strings then use ord (in python 2) and ^ for each of characters :
TAG : python
Date : November 22 2020, 10:56 AM , By : albertiko89
A simple python confusion about format string
A simple python confusion about format string
This might help you The quotes depends on the string: if there are no quotes, it will use simple quotes:
TAG : python
Date : November 22 2020, 10:56 AM , By : Liam_S
Finding index of a list containing an item, also in a list
Finding index of a list containing an item, also in a list
I think the issue was by ths following , Let's say my list is this: , You can use enumerate and list comprehension :
TAG : python
Date : November 22 2020, 10:56 AM , By : user2956650
How to test Domain is it 'www' domain or subdomain or name server domain or mail domain in python?
How to test Domain is it 'www' domain or subdomain or name server domain or mail domain in python?
wish help you to fix your issue I have domain list I want to test are they main domain or sub-domain or nameserver or mailserver: , Try this:
TAG : python
Date : November 22 2020, 10:56 AM , By : user2956618
Keydown event for Pygame
Keydown event for Pygame
Any of those help this is because updated tankX values do not affect the tank object. there are many ways to make it work. for example, inserting a re-initialization of tank in the while True loop:
TAG : python
Date : November 22 2020, 10:56 AM , By : user2956571
Lazy loading csv with pandas
Lazy loading csv with pandas
Hope that helps For a small number of lines try using linecache and manually creating a pandas DataFrame.For example, the following code puts lines 12, 24, and 36 (1-indexed) into a DataFrame.
TAG : python
Date : November 22 2020, 10:56 AM , By : user2956541
Use webdriver,python,beautifulsoup to retrieve dynamic website
Use webdriver,python,beautifulsoup to retrieve dynamic website
help you fix your problem You are missing two key selenium-specific things: do not use time.sleep() - use Waits use Select class when dealing with select/option - it provides a very nice abstraction
TAG : python
Date : November 22 2020, 10:56 AM , By : williamelworthy
Scrapy is Visiting same Url despite dont_filter=False
Scrapy is Visiting same Url despite dont_filter=False
around this issue Scrapy, by default, would append into the output file if it exists. What you see in the output.csv is the results of multiple spider runs. Remove the output.csv before running the spider again.
TAG : python
Date : November 22 2020, 10:56 AM , By : user2956447
How to add support for SNI in python 2.7
How to add support for SNI in python 2.7
hope this fix your issue Many network security features, including SNI support, were backported from Python 3.4 and released in Python 2.7.9. See https://docs.python.org/2/whatsnew/2.7.htmlpep-466-network-security-enhancements-for-python-2-7
TAG : python
Date : November 22 2020, 10:56 AM , By : user2956439
Pandas: np.where with multiple conditions on dataframes
Pandas: np.where with multiple conditions on dataframes
will help you It is not clear to me what you exactly want to do when a y element is equal to zero... anyway the key point in this answer is "use np.logical_{and,not,or,xor} functions".I think that the following, albeit formulated differently from you
TAG : python
Date : November 22 2020, 10:56 AM , By : praveen
How to get meaningful words by splitting a continuous string?
How to get meaningful words by splitting a continuous string?
this one helps. For removing the \n chars strip will only work if they are at beginning and end of string.You can use split instead and attach string back without the \n if you end up splitting on \n
TAG : python
Date : November 22 2020, 10:54 AM , By : user2956360
TypeError: 'numpy.ndarray' object is not callable while extracting index and elements are stored in different array in p
TypeError: 'numpy.ndarray' object is not callable while extracting index and elements are stored in different array in p
wish helps you When i execute the following line , Try this:
TAG : python
Date : November 22 2020, 10:54 AM , By : Christina
Python: comparing list to a string
Python: comparing list to a string
Does that help I want to know how to compare a string to a list. For example I have string 'abcdab' and a list ['ab','bcd','da']. Is there any way to compare all possible list combinations to the string, and avoid overlaping elements. so that output
TAG : python
Date : November 22 2020, 10:54 AM , By : user2956273
Is there any way to write '\r' into a file on linux with python?
Is there any way to write '\r' into a file on linux with python?
hope this fix your issue It should work as you said.One possible reason you don't see the \r is that the editor you're using detect the fileformat (line ending) and hide the CR.
TAG : python
Date : November 22 2020, 10:54 AM , By : B98

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