because I now default to python2.7 every time, now I want to start with python3 every time, ask for advice, how to default python3 now? Because of many coding problems
because I now default to python2.7 every time, now I want to start with python3 every time, ask for advice, how to default python3 now? Because of many coding problems
install Anaconda with default Python 3.
I use Macbook
linux can create a virtual environment. Specify that the version of the virtual environment python is python3
if you don't need Python2.7, you can uninstall version 2.7.
you can create a virtual environment before creating a crawler project (pipenv or other methods are fine. I now create it with Pycharm setting). You can specify the Python version when creating the virtual environment. I have several Python versions installed on my computer (just for fun), and then activate the virtual environment before starting the crawler.
I have also written a blog about the Python virtual environment. Please refer to https://blog.csdn.net/wgPytho...
none of the above should be to the point. On the one hand, it depends on whether you execute it in an IDE like Pycharm or manually, and if you are in an IDE like Pycharm, there are settings to configure the current python environment.
if it is executed manually, and then you have python2.7 and python3.6 in your system, you can use python3 run.py to execute.
give you a website
pythonlibs/" rel=" nofollow noreferrer "> https://www.lfd.uci.edu/~gohl...
search scrapy
Python2 Python3,
227K
, (Python2)
File -> Settings -> Project:xxxxxx -> Project Interpreter Python
anaconda, conda
enter Scrapy-1.6.0-py2.py3-none-any.whl the directory where this folder is located
if you anaconda do Python3
enter
pip install Scrapy-1.6.0-py2.py3-none-any.whlPython2's words are almost the same as pytcharm modification, OK!
Previous: Failed to connect to the database
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