ros使用命令catkin_make 时出现下面的错误，怎么解决呢？求：

CMake Error at /opt/ros/noetic/share/catkin/cmake/catkinConfig.cmake:83 (find_package):
  Could not find a package configuration file provided by "rospy" with any of
  the following names:

    rospyConfig.cmake
    rospy-config.cmake

  Add the installation prefix of "rospy" to CMAKE_PREFIX_PATH or set
  "rospy_DIR" to a directory containing one of the above files.  If "rospy"
  provides a separate development package or SDK, be sure it has been
  installed.
Call Stack (most recent call first):
  learning_communication/CMakeLists.txt:10 (find_package)

-- Configuring incomplete, errors occurred!
See also "/home/wyw/ws/first_ws/build/CMakeFiles/CMakeOutput.log".
See also "/home/wyw/ws/first_ws/build/CMakeFiles/CMakeError.log".
Invoking "cmake" failed