升级pip后解决:

python -m pip install --upgrade pip
pip install "package-name"

对我来说这很有效

python3 -m pip3 install -U pip

你也可以试试

python -m pip install -U pip

在linux上试试:

sudo apt install python-pip python-bluez libbluetooth-dev libboost-python-dev libboost-thread-dev libglib2.0-dev bluez bluez-hcidump

将Python升级到版本3解决了我的问题。其他的都没用。

我刚刚在尝试pip install -e时遇到了同样的问题。新的回购。我没有注意到setup.py的内容没有被正确保存，我有效地运行了一个空的setup.py命令。

因此，如果目标包的setup.py为空或格式不正确，您可能会遇到相同的错误消息。

Download and install the Microsoft Visual C++ Compiler for Python 2.7 from https://www.microsoft.com/en-in/download/details.aspx?id=44266 - this package contains the compiler and set of system headers necessary for producing binary wheels for Python 2.7 packages. Open a command prompt in elevated mode (run as administrator) Firstly do pip install ez_setup Then do pip install unroll (It will start installing numpy, music21, decorator, imageio, tqdm, moviepy, unroll) # Please be patient for music21 installation

Python 2.7.11使用64位