python-guide | Python Chinese Guide : Zero-Based Python Tutorial
kandi X-RAY | python-guide Summary
kandi X-RAY | python-guide Summary
Python Chinese Guide: Zero-Based Python Tutorial from Zero to One
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Convert markdown to rst file
- Cut characters from text
- Process a piece of text
- Return a list of binary segments
- Split the input
- Get information about all chapters
- Get title from a file
- Generate the mapping for each chapter
- Get the chapter name from a file
- Make a link to a file
- Get information from a file
- Returns a list of all blog directories
- Print the contents of a md file
- Return a list of all chapters
python-guide Key Features
python-guide Examples and Code Snippets
Community Discussions
Trending Discussions on python-guide
QUESTION
I am following a guide to get NLTK working on my computer and part of the process is setting up a virtual environment so I can manage packages across projects.
Here is the guide I'm following: https://docs.python-guide.org/dev/virtualenvs/
I run into an issue when I reach the part where I'm supposed to "pipenv install requests". I get the message Installing...Failed to load paths: No Python at 'c:\users\[username]\appdata\local\programs\python\**python38**\python.exe'
I have python 3.9.2 installed so my path is c:\users\[username]\appdata\local\programs\python\**python39**\python.exe. Therefore, the python38 directory does not exist, nor does the path in my environment variables.
Do I need to install 3.8.8 to be able to follow this guide? If so, can I install 3.8.8 while 3.9.2 is installed as well, or Can I switch between the two versions? should I just uninstall 3.9.2 and work with 3.8.8?
Thank you.
...ANSWER
Answered 2021-Feb-24 at 01:01You might need to specify a python version for pipenv, you can do that with: pipenv --version 3.9, you can read more about specifying the version here: https://pipenv.pypa.io/en/latest/basics/#specifying-versions-of-python
QUESTION
This came from an article describing common 'gotchas' in Python. My question is not about the gotcha he's describing or why this code below doesn't do what you might expect --it is more basic than that.
I do not understand what the iterator over the function is doing: The code is below;
there is a function:
...ANSWER
Answered 2021-Feb-12 at 22:39The for loop is not iterating over the function, it is iterating over the list of lambda functions returned by create_multipliers. The tricky part is that return statement in create_multipliers is actually a list comprehension creating a list of (5) lambda expressions. You can see that by looking at that this example code in isolation:
QUESTION
I want to show part of my bookmarks on my Hugo website. The bookmarks from Firefox can be saved in JSON format, this is the source. The result should represent the nested structure somehow, in a format of a nested list, treeview or accordion. The source files of contents on the website are written in markdown. I want to generate a markdown file from the JSON input.
As I searched for possible solutions:
- treeview or accordion: HTML, CSS and Javascript needed. I could not nest accordions with the
tag. Also, seems like overkill at the moment. - unordered list: can be done with bare markdown.
I chose to generate an unordered nested list from JSON. I would like to do this with R.
Input/outputInput sample: https://gist.github.com/hermanp/c01365b8f4931ea7ff9d1aee1cbbc391
Preferred output (indentation with two spaces):
...ANSWER
Answered 2020-Dec-08 at 16:10After I watched a few videos on recursion and saw a few code examples, I tried, manually stepped through the code and somehow managed to do it with recursion. This solution is independent on the nestedness of the bookmarks, therefore a generalized solution for everyone.
Note: all the bookmarks were in the Bookmarks Toolbar in Firefox. This is highlighted in the generate_md function. You can tackle with it there. If I improve the answer later, I will make it more general.
QUESTION
I am trying to model an established Python project based on the recommendeded project structure according to https://docs.python-guide.org/writing/structure/.
After switching to this new structure, I now need to run the script with $ python3 -m sample.runner instead of just $ python3 runner.py or else I get a ModuleNotFoundError. I am trying to understand why that is and whether or not it can be avoided?
Runnning $ python3 runner.py with the new structure gives me:
ANSWER
Answered 2020-Dec-02 at 22:20The sample module is not know because Python does not know where to look for it; it is not in PYTHONPATH. You can extend it at the beginning of the script if needed:
QUESTION
I'm trying to print a message when instance methods get called, like below. I'm running into this problem, but I'm having trouble solving it in my case because all the solutions seem to require passing in specific arguments which I can't do here.
...ANSWER
Answered 2020-Jul-22 at 21:17Would this help? Add a keyword argument with a default value in order to do early binding of method (then use that keyword argument _method in place of method inside the function).
The whole code is shown for convenience, but the only part changed from the code in the question is the tracked_method function itself.
QUESTION
I am working on a (fairly basic) feature in a PySide2 application. The application contains a list of checkboxes, and when a checkbox is checked, I need to append the index of the checkbox to a list. My unsuccessful attempt at this can be seen below...
...ANSWER
Answered 2020-Jun-24 at 22:33Try it:
QUESTION
I have not used python since installing on my Mac OS for a class in probably 2015 (read: beginner. I know nothing about configuring environment/dependency stuff). Recently, I decided to use python again for simple scripting. Scripts were executing but I was unable to import a numpy dependency. I received error messages about my numpy and did a bunch of pip uninstall/reinstall/upgrade/install-ignore numpy stuff. I kept getting the following message:
ImportError: Something is wrong with the numpy installation. While importing we detected an older version of numpy in ['/Users/userName/anaconda/lib/python2.7/site-packages/numpy']. One method of fixing this is to repeatedly uninstall numpy until none is found, then reinstall this version.
I decided to address my outdated python; I googled how to do this and ran brew install python as suggested here.
This did not solve the issue. I kept trying answers I found online that had worked for other people, including uninstalling and reinstalling and upgrading pip/pip3. This resulted in an effed up pip. Calling pip -V returns:
from pip._internal.cli.main import main ImportError: No module named pip._internal.cli.main
At this point I realized that my system was looking in this anaconda file for all things python (which I probably installed at some point as a student 5 years ago). Now my pip doesn't work, my python is supposedly v3 according to homebrew, but everything is looking for a highly outdated anaconda file.
I even attempted to update anaconda via their instructions. I get this error:
ImportError: No module named conda.cli
What have I done are there steps I can take to fix these issues?
...ANSWER
Answered 2020-Jun-04 at 20:53Zeroth rule... make a backup.
First rule... do not delete anything supplied by Apple. That includes anything under:
/bin/usr/bin/Applications/Library
Second rule... do delete anything from homebrew because you can simply reinstall it later. Find homebrew Python packages with:
QUESTION
I have a MacBook Pro 13` inch (without touch bar) and it is running mac os sierra. I have installed Xcode, command line tools and homebrew. Now I want to install python 3 and make it a default interpreter when calling it from the terminal. I have found this guide http://docs.python-guide.org/en/latest/starting/install3/osx/ and I get confused when they say I should add the path to the ~./profile but I don't know where to find the file. Can somebody help with step by step guide on how to create it if it not there?
Thanks
...ANSWER
Answered 2018-Apr-24 at 09:54The file you are looking for depends on your shell, so if you are using bash, which is the default shell on Mac systems, it will be either ~/.bash_profile, or ~/.bashrc depending on whether you are in a login shell or non-login shell respectively.
Mac Terminal runs a login shell every time a new terminal window is open, and it calls .bash_profile, so you should use ~/.bash_profile.
QUESTION
>>> def fun(l=[]):
... l.append(1)
... print(l)
...
>>> fun()
[1]
>>> fun()
[1, 1]
>>> fun([])
[1]
>>> fun()
[1, 1, 1]
>>>
ANSWER
Answered 2020-May-10 at 15:04From the same documentation.
Python’s default arguments are evaluated once when the function is defined, not each time the function is called (like it is in say, Ruby). This means that if you use a mutable default argument and mutate it, you will and have mutated that object for all future calls to the function as well.
To confirm this you can print the id of the default argument. Default argument uses same list object for all future calls to the function. But where as fun([]) pass a new list object to l(Hence does not uses the value of default argument)
QUESTION
What I'm trying to do here is to make python3 as my default python. Except the python 2.7 which automatically installed on mac, I installed python3 with homebrew. This is the website that I'm following. http://docs.python-guide.org/en/latest/starting/install3/osx/#install3-osx
I guess I followed every instruction well, got xcode freshly installed, Command line tools, and homebrew. But here's my little confusion occurs.
The script will explain what changes it will make and prompt you before the installation begins. Once you’ve installed Homebrew, insert the Homebrew directory at the top of your PATH environment variable. You can do this by adding the following line at the bottom of your ~/.profile file
export PATH=/usr/local/bin:/usr/local/sbin:$PATH
I was really confused what this was, but I concluded that I should just add this following line at the bottom of ~/.profile file. So I opened the ~/.profile file by open .profile in the terminal, and added following line at the bottom. And now it looks like this.
...ANSWER
Answered 2018-Apr-07 at 07:08According to this S.O. post, changing the default Python interpreter could possibly break some applications that depend on Python 2.
The post also refers to using aliasing as a solution, and this link might also be a good reference on how to do that.
Personally, I just type "Python3" before I run scripts or go into a shell environment instead of "python".
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install python-guide
You can use python-guide like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page
