My system is Windows 10 x64
Now I would like to install pyicu but I encounter with a problem like this
Collecting pyicu
Using cached Py
You can download a corresponding whl file from Unofficial Windows Binaries for Python Extension Packages
For example, the latest version (as of Jan 13 2019) for your 64-bit Windows and Python3.7 version is PyICU‑2.2‑cp37‑cp37m‑win_amd64.whl
Then open the Windows Powershell console as Administrator, cd to the directory where you put the whl file and execute the following command:
python -m pip install .\PyICU‑2.2‑cp37‑cp37m‑win_amd64.whl
or (if you already have a previous PyICU version installed)
python -m pip install -U .\PyICU‑2.2‑cp37‑cp37m‑win_amd64.whl