Q1. I entered `python -m pip install --upgrade pip` and it answered that regularly worked. But, when I check it again by `pip list`, it was found that the version has been not changed. How can I solve this problem?

![image description](https://i.stack.imgur.com/q3Gom.png)

Q2. `pip install json` also doens't work!

![image description](https://i.stack.imgur.com/YpP40.png)

This is PyCharm on Windows 8.1 K.