1: Even if the library with C extension is installed successfully, the extension function of C cannot be used. IOS requires us to port the library again before it becomes available. For free porting library needs, please contact: WeChat or QQ: 1301367159
2: Many pure py library installations are source code installations. When installing the source code, fork() is used. This function cannot be used in iOS and returns errno=1. The reason is: “Operation not permitted”。 Due to the failure of source code installation, we copied a copy of the source code to "site packages" during PyPI source code installation. You can copy out the useful source code for use.
3: You can also compress the pure py library on your computer into .zip, transfer it to the site packages path through our local area network, and then click to decompress and use it.
