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在python中调用另一个已安装的包

pip python

user1079877 · 技术社区 · 8 年前

我是巨蟒的新手。我要做的是安装后 esptool 包装( pip install esptool )在我的应用程序中用大量参数调用它的主方法。比如:

esptool.py -p /dev/ttyUSB0 write_flash -fm qio 0x0000

我面临一个问题。 esptool 不在要导入的python包列表中(它已经安装了pip)。我该如何使用 import 然后调用主方法?

1 回复 | 直到 8 年前

hoefling 8 年前

import esptool esptool.py

`sys.path`

$ PYTHONPATH=$(which esptool.py)/.. python -c "import esptool; esptool.main()"

import os
import sys

try:
    from shutil import which
except ImportError:
    from distutils.spawn import find_executable as which


bindir = os.path.dirname(which('esptool.py'))
sys.path.append(bindir)  # after this line, esptool becomes importable

import esptool


if __name__ == '__main__':
    esptool.main()

import importlib.machinery
import importlib.util

from shutil import which


if __name__ == '__main__':
    loader = importlib.machinery.SourceFileLoader('esptool', which('esptool.py'))
    spec = importlib.util.spec_from_loader(loader.name, loader)
    esptool = importlib.util.module_from_spec(spec)
    loader.exec_module(esptool)  # after this line, esptool is imported

    esptool.main()

import imp
from distutils.spawn import find_executable as which


if __name__ == '__main__':
    esptool = imp.load_source('esptool', which('esptool.py'))
    esptool.main()

sys.argv

# assuming esptool is imported
import sys

if __name__ == '__main__':
    # save the current arguments
    argv_original = sys.argv[:]
    # overwrite arguments to be passed to esptool argparser
    sys.argv[:] = ['', '-p', '/dev/ttyUSB0', 'write_flash', '-fm', 'qio', '0x0000']
    try:
        esptool.main()
    except Exception:
        # TODO deal with errors here
        pass
    finally:  # restore original arguments
        sys.argv[:] = argv_original

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