我正在尝试将带有cuDF和cuML的Rapids库安装到Colab会话，并执行添加到该示例的代码：从 Googe Colab笔记本上的Install RAPIDS库 

!wget -nc https://raw.githubusercontent.com/rapidsai/notebooks-contrib/890b04ed8687da6e3a100c81f449ff6f7b559956/utils/rapids-colab.sh
!bash rapids-colab.sh

import sys, os

dist_package_index = sys.path.index("/usr/local/lib/python3.6/dist-packages")
sys.path = sys.path[:dist_package_index] + ["/usr/local/lib/python3.6/site-packages"] + sys.path[dist_package_index:]```
sys.path
if os.path.exists('update_pyarrow.py'): ## This file only exists if you're using RAPIDS version 0.11 or higher
  exec(open("update_pyarrow.py").read(), globals())

在安装过程中，我收到此错误：


  - cudf=0.11

Current channels:

  - https://conda.anaconda.org/rapidsai-nightly/label/xgboost/linux-64
  - https://conda.anaconda.org/rapidsai-nightly/label/xgboost/noarch
  - https://conda.anaconda.org/rapidsai-nightly/linux-64
  - https://conda.anaconda.org/rapidsai-nightly/noarch
  - https://conda.anaconda.org/nvidia/linux-64
  - https://conda.anaconda.org/nvidia/noarch
  - https://conda.anaconda.org/conda-forge/linux-64
  - https://conda.anaconda.org/conda-forge/noarch
  - https://repo.anaconda.com/pkgs/main/linux-64
  - https://repo.anaconda.com/pkgs/main/noarch
  - https://repo.anaconda.com/pkgs/free/linux-64
  - https://repo.anaconda.com/pkgs/free/noarch
  - https://repo.anaconda.com/pkgs/r/linux-64
  - https://repo.anaconda.com/pkgs/r/noarch
  - https://repo.anaconda.com/pkgs/pro/linux-64
  - https://repo.anaconda.com/pkgs/pro/noarch

To search for alternate channels that may provide the conda package you're
looking for, navigate to

    https://anaconda.org

and use the search bar at the top of the page.

我尝试分别使用cuDF和cuML安装 

conda install -c rapidsai -c nvidia -c conda-forge \
    -c defaults cudf=0.12 python=3.6 cudatoolkit=10.0

但仍然收到错误：

ModuleNotFoundError Traceback (most recent call last)

<ipython-input-10-a95ca25217db> in <module>()
----> 1 import cudf
      2 import io, requests
      3 
      4 # download CSV file from GitHub
      5 url="https://github.com/plotly/datasets/raw/master/tips.csv"

ModuleNotFoundError: No module named 'cudf'

如何解决这个错误？