Python pip安装googletrans错误（要求httpx==0.13.3）

我目前正在和我的树莓pi一起运行google trans

我安装它有困难

当我输入

pip安装googletrans

时，就会出现这个问题

Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting httpx[http2]
  Could not find a version that satisfies the requirement httpx[http2] (from versions: )
No matching distribution found for httpx[http2]

我已经搜索过了，要使用httpx，我必须使用python3.6+，但我的Python是3.7.3

我尝试使用安装httpx

pip安装httpx

或

pip安装httpx[http2]

此错误消息将显示出来

Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting httpx[http2]

---

我要怎么做才能修复它？

试试

pip安装httpx==0.13.3

first.Python3:

pip3安装googletrans