Modulenotfounderror: no module named 'scratch' ultimate solution

Use scrapy When the command generates a crawler item

Traceback (most recent call last):
  xxx in <module>
    from scrapy.cmdline import execute
ModuleNotFoundError: No module named 'scrapy'

For the above questions , It can still be used some time ago , The overall environment did not move , It suddenly doesn't work today . It took a long time to solve the problem . Most online solutions are not easy to use , It's not easy to unload and reload . Later, I found a frame ：conda
Its official website is as follows ：https://www.anaconda.com/products/distribution

Download and install directly .

brief introduction ：

Conda Is an open source package and environmental management system , Can be in Windows、macOS and Linux Up operation .Conda Can be installed quickly 、 Run and update packages and their dependencies . It can also be easily created 、 preservation 、 Switch between loading and the environment on the local computer . It is for Python Program created , But it can package and distribute software for any language .

Use ：

be based on pycharm CE . Configuration items ： stay preference Middle configuration Python Interpreter.Python Interpreter. It is equivalent to an environment package , The environment package of the project can be switched at will .

We can create a new environment package . We use the dependency package in the environment Conda To load the .

python version Can choose 3.7 Version of .

After the environment is built We can open the client tools Search for scrapy Associate the dependency package with the newly built environment .

After application, you can pycharm Refresh the environment ,scrapy The dependent packages of the framework have been downloaded . At this time, it can run normally under the following path of the project scrapy The command .

summary

The reason for this problem , It is possible that the framework environment has changed , Or version differences .