ImportError: No module named future 尽管已经安装答案

【问题标题】：ImportError: No module named future Despite having it installedImportError: No module named future 尽管已经安装
【发布时间】：2021-04-01 12:50:38
【问题描述】：

catkin build 失败是因为

Errors     << mavlink:make /home/eia-lab1/catkin_ws/logs/mavlink/build.make.005.log
Traceback (most recent call last):
  File "/home/eia-lab1/catkin_ws/src/mavlink/pymavlink/tools/mavgen.py", line 16, in <module>
    from pymavlink.generator import mavgen
  File "/home/eia-lab1/catkin_ws/src/mavlink/pymavlink/generator/mavgen.py", line 26, in <module>
    from future import standard_library
ImportError: No module named future
make[2]: *** [paparazzi-v2.0-cxx-stamp] Error 1
make[1]: *** [CMakeFiles/paparazzi.xml-v2.0.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
Traceback (most recent call last):
  File "/home/eia-lab1/catkin_ws/src/mavlink/pymavlink/tools/mavgen.py", line 16, in <module>
    from pymavlink.generator import mavgen
  File "/home/eia-lab1/catkin_ws/src/mavlink/pymavlink/generator/mavgen.py", line 26, in <module>
    from future import standard_library
ImportError: No module named future
make[2]: *** [matrixpilot-v2.0-cxx-stamp] Error 1
make[1]: *** [CMakeFiles/matrixpilot.xml-v2.0.dir/all] Error 2
make: *** [all] Error 2

尽管安装了 future。

$ pip list | grep fut
future                        0.18.2

我已经尝试过以下方法：

$ pip install -U future 
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: future in /home/eia-lab1/.local/lib/python3.6/site-packages (0.18.2)

$ sudo -H pip install future
Requirement already satisfied: future in /usr/lib/python3/dist-packages (0.15.2)

$ python3 -m pip install future
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: future in /home/eia-lab1/.local/lib/python3.6/site-packages (0.18.2)

$ pip install future
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: future in /home/eia-lab1/.local/lib/python3.6/site-packages (0.18.2)

$ pip3 install future
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: future in /home/eia-lab1/.local/lib/python3.6/site-packages (0.18.2)

资源：

我开始认为这可能是路径采购问题！？我正在使用 Ubuntu 18.04 LTS。

【问题讨论】：

嗯pip2 install future怎么样

标签： python python-3.x pip catkin mavlink

【解决方案1】：

我无法添加 cmets，所以我开始了。

您可能使用了错误的python版本，请尝试使用新的或旧的
模块可能在错误的文件中

这是我看到的仅有的两件事，因为您已经尝试了各种安装方法

【讨论】：