DYLD_LIBRARY_PATH和LD_LIBRARY_PATH不能被python和macOS Sierra上的子处理模块使用
DYLD_LIBRARY_PATH和LD_LIBRARY_PATH不能被python和macOS Sierra上的子处理模块使用
提问于 2018-02-07 06:57:23
在macOS Sierra10.12.6上，环境变量LD_LIBRARY_PATH不能被os.system()、subprocess.run()和subprocess.Popen()使用，尽管PATH可以正常使用。Python是3.6.1。但是在Linux(Ubuntu17.10)上，这个环境变量也可以正确地使用。下面的python脚本envv.py可以显示这个问题：
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import subprocess
import os
import time
PATH = "PATH"
print(os.environ.get(PATH))
os.system("echo $" + PATH)
subprocess.run("echo $" + PATH, shell=True)
subprocess.run("/bin/echo $" + PATH, shell=True)
subprocess.run("/bin/echo $" + PATH, shell=True, env={PATH: os.environ.get(PATH)})
subprocess.run("/bin/echo $" + PATH, shell=True, env=os.environ)
subprocess.Popen("/bin/echo $" + PATH, shell=True, env=os.environ.copy())
time.sleep(2)
print('\n')
LD_LIBRARY_PATH = "LD_LIBRARY_PATH"
print(os.environ.get(LD_LIBRARY_PATH))
os.system("echo $" + LD_LIBRARY_PATH)
subprocess.run("/bin/echo $" + LD_LIBRARY_PATH, shell=True)
subprocess.run("/bin/echo $" + LD_LIBRARY_PATH, shell=True, env={LD_LIBRARY_PATH: os.environ.get(LD_LIBRARY_PATH)})
subprocess.run("/bin/echo $" + LD_LIBRARY_PATH, shell=True, env=os.environ)
subprocess.Popen("/bin/echo $" + LD_LIBRARY_PATH, shell=True, env=os.environ.copy())
time.sleep(2)
print('\n')在macOS上，输出是
$ python3 envv.py
/opt/alps/bin:...
/opt/alps/bin:...
/opt/alps/bin:...
/opt/alps/bin:...
/opt/alps/bin:...
/opt/alps/bin:...
/opt/alps/bin:...
/opt/alps/lib:...
$ # use $ to show blank line
$
....在Linux上，输出是
$ python3 envv.py
/opt/intel/compilers_and_libraries_2018.1.163/linux/bin/intel64:...
/opt/intel/compilers_and_libraries_2018.1.163/linux/bin/intel64:...
/opt/intel/compilers_and_libraries_2018.1.163/linux/bin/intel64:...
/opt/intel/compilers_and_libraries_2018.1.163/linux/bin/intel64:...
/opt/intel/compilers_and_libraries_2018.1.163/linux/bin/intel64:...
/opt/intel/compilers_and_libraries_2018.1.163/linux/bin/intel64:...
/opt/intel/compilers_and_libraries_2018.1.163/linux/bin/intel64:...
/opt/intel/compilers_and_libraries_2018.1.163/linux/compiler/lib/intel64:...
/opt/intel/compilers_and_libraries_2018.1.163/linux/compiler/lib/intel64:...
/opt/intel/compilers_and_libraries_2018.1.163/linux/compiler/lib/intel64:...
/opt/intel/compilers_and_libraries_2018.1.163/linux/compiler/lib/intel64:...
/opt/intel/compilers_and_libraries_2018.1.163/linux/compiler/lib/intel64:...
/opt/intel/compilers_and_libraries_2018.1.163/linux/compiler/lib/intel64:...有人知道吗？非常感谢!
更新2018-02-07
遵循@GrahamDumpleton的建议，我尝试了DYLD_LIBRARY_PATH，但得到了相同的结果。
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import subprocess
import os
DYLD_LIBRARY_PATH = "DYLD_LIBRARY_PATH"
print(os.environ.get(DYLD_LIBRARY_PATH))
os.system("echo $" + DYLD_LIBRARY_PATH)
subprocess.run("/bin/echo $" + DYLD_LIBRARY_PATH, shell=True)
subprocess.run("/bin/echo $" + DYLD_LIBRARY_PATH, shell=True, env={DYLD_LIBRARY_PATH: os.environ.get(DYLD_LIBRARY_PATH)})
subprocess.run("/bin/echo $" + DYLD_LIBRARY_PATH, shell=True, env=os.environ)
subprocess.Popen("/bin/echo $" + DYLD_LIBRARY_PATH, shell=True, env=os.environ.copy())而相关的输出是
$ python3 envv.py
/opt/intel/compilers_and_libraries_2018.1.126/mac/compiler/lib:...
$
$
...回答 1
Stack Overflow用户
发布于 2020-11-25 01:47:02
如果将subprocess.Popen与shell=True结合使用，则可以手动传播LD_LIBRARY_PATH和DYLD_LIBRARY_PATH变量，如下所示：
import os
import sys
import subprocess
cmd = "/bin/echo $DYLD_LIBRARY_PATH"
sys_env = os.environ.copy()
# We've used os.environ.copy() so we can make mods
# to the subprocess environment if needed without
# affecting the parent process.
if sys.platform == 'darwin':
if "LD_LIBRARY_PATH" in sys_env:
cmd = f"export LD_LIBRARY_PATH={sys_env['LD_LIBRARY_PATH']} && {cmd}"
if "DYLD_LIBRARY_PATH" in sys_env:
cmd = f"export DYLD_LIBRARY_PATH={sys_env['DYLD_LIBRARY_PATH']} && {cmd}"
process = subprocess.Popen(
cmd,
env=sys_env,
shell=True,
)页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/48657710
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