Solution to sudo PIP install gevent installation failure

• operating system ： Raspberry pie

Error phenomenon

When we install python Of gevent When the package , Sometimes, unfortunately, the installation fails , I hope your failure is the same as mine , This will help you solve the problem , The installation error information is as follows ：

 sudo pip install gevent
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting gevent
  Using cached https://files.pythonhosted.org/packages/c8/18/631398e45c109987f2d8e57f3adda161cc5ff2bd8738ca830c3a2dd41a85/gevent-21.12.0.tar.gz
  Installing build dependencies ... error
  Complete output from command /usr/bin/python -m pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-ix_DdY --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple --extra-index-url https://www.piwheels.org/simple -- "setuptools >= 40.8.0" wheel "Cython >= 3.0a9" "cffi >= 1.12.3 ; platform_python_implementation == 'CPython'" "greenlet >= 0.4.17, < 2.0 ; platform_python_implementation == 'CPython'":
  Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple, https://www.piwheels.org/simple
  Collecting setuptools>=40.8.0
    Using cached https://files.pythonhosted.org/packages/e1/b7/182161210a13158cd3ccc41ee19aadef54496b74f2817cc147006ec932b4/setuptools-44.1.1-py2.py3-none-any.whl
  Collecting wheel
    Using cached https://files.pythonhosted.org/packages/27/d6/003e593296a85fd6ed616ed962795b2f87709c3eee2bca4f6d0fe55c6d00/wheel-0.37.1-py2.py3-none-any.whl
  Collecting Cython>=3.0a9
    Using cached https://files.pythonhosted.org/packages/c4/7c/293f5e9311664af5f54ca46dcb2118fc1b4e551eec161f74c050f17cd991/Cython-3.0.0a10-py2.py3-none-any.whl
  Collecting cffi>=1.12.3
    Using cached https://files.pythonhosted.org/packages/2b/a8/050ab4f0c3d4c1b8aaa805f70e26e84d0e27004907c5b8ecc1d31815f92a/cffi-1.15.1.tar.gz
  Collecting greenlet<2.0,>=0.4.17
  Collecting pycparser (from cffi>=1.12.3)
    Using cached https://files.pythonhosted.org/packages/62/d5/5f610ebe421e85889f2e55e33b7f9a6795bd982198517d912eb1c76e1a53/pycparser-2.21-py2.py3-none-any.whl
  Building wheels for collected packages: cffi
    Running setup.py bdist_wheel for cffi: started
    Running setup.py bdist_wheel for cffi: finished with status 'error'
    Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-Ez5ALp/cffi/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /tmp/pip-wheel-lxLCdt --python-tag cp27:
    Package libffi was not found in the pkg-config search path.
    Perhaps you should add the directory containing `libffi.pc' to the PKG_CONFIG_PATH environment variable No package 'libffi' found Package libffi was not found in the pkg-config search path. Perhaps you should add the directory containing `libffi.pc' to the PKG_CONFIG_PATH environment variable No package 'libffi' found Package libffi was not found in the pkg-config search path. Perhaps you should add the directory containing `libffi.pc'
    to the PKG_CONFIG_PATH environment variable
    No package 'libffi' found
    Package libffi was not found in the pkg-config search path.
    Perhaps you should add the directory containing `libffi.pc' to the PKG_CONFIG_PATH environment variable No package 'libffi' found Package libffi was not found in the pkg-config search path. Perhaps you should add the directory containing `libffi.pc' to the PKG_CONFIG_PATH environment variable No package 'libffi' found running bdist_wheel running build running build_py creating build creating build/lib.linux-armv7l-2.7 creating build/lib.linux-armv7l-2.7/cffi copying cffi/vengine_gen.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/error.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/cparser.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/commontypes.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/ffiplatform.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/vengine_cpy.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/cffi_opcode.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/pkgconfig.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/api.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/backend_ctypes.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/model.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/recompiler.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/__init__.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/setuptools_ext.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/verifier.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/lock.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/_cffi_include.h -> build/lib.linux-armv7l-2.7/cffi copying cffi/parse_c_type.h -> build/lib.linux-armv7l-2.7/cffi copying cffi/_embedding.h -> build/lib.linux-armv7l-2.7/cffi copying cffi/_cffi_errors.h -> build/lib.linux-armv7l-2.7/cffi running build_ext building '_cffi_backend' extension creating build/temp.linux-armv7l-2.7 creating build/temp.linux-armv7l-2.7/c arm-linux-gnueabihf-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fdebug-prefix-map=/build/python2.7-InigCj/python2.7-2.7.16=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC -DFFI_BUILDING=1 -DUSE__THREAD -DHAVE_SYNC_SYNCHRONIZE -I/usr/include/ffi -I/usr/include/libffi -I/usr/include/python2.7 -c c/_cffi_backend.c -o build/temp.linux-armv7l-2.7/c/_cffi_backend.o c/_cffi_backend.c:15:10: fatal error: ffi.h: No such file or directory #include <ffi.h> ^~~~~~~ compilation terminated. error: command 'arm-linux-gnueabihf-gcc' failed with exit status 1 ---------------------------------------- Failed building wheel for cffi Running setup.py clean for cffi Failed to build cffi Installing collected packages: setuptools, wheel, Cython, pycparser, cffi, greenlet Running setup.py install for cffi: started Running setup.py install for cffi: finished with status 'error' Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-Ez5ALp/cffi/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-record-ffnMrz/install-record.txt --single-version-externally-managed --prefix /tmp/pip-build-env-ix_DdY --compile: Package libffi was not found in the pkg-config search path. Perhaps you should add the directory containing `libffi.pc'
      to the PKG_CONFIG_PATH environment variable
      No package 'libffi' found
      Package libffi was not found in the pkg-config search path.
      Perhaps you should add the directory containing `libffi.pc' to the PKG_CONFIG_PATH environment variable No package 'libffi' found Package libffi was not found in the pkg-config search path. Perhaps you should add the directory containing `libffi.pc' to the PKG_CONFIG_PATH environment variable No package 'libffi' found Package libffi was not found in the pkg-config search path. Perhaps you should add the directory containing `libffi.pc'
      to the PKG_CONFIG_PATH environment variable
      No package 'libffi' found
      Package libffi was not found in the pkg-config search path.
      Perhaps you should add the directory containing `libffi.pc' to the PKG_CONFIG_PATH environment variable No package 'libffi' found running install running build running build_py creating build creating build/lib.linux-armv7l-2.7 creating build/lib.linux-armv7l-2.7/cffi copying cffi/vengine_gen.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/error.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/cparser.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/commontypes.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/ffiplatform.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/vengine_cpy.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/cffi_opcode.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/pkgconfig.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/api.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/backend_ctypes.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/model.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/recompiler.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/__init__.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/setuptools_ext.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/verifier.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/lock.py -> build/lib.linux-armv7l-2.7/cffi copying cffi/_cffi_include.h -> build/lib.linux-armv7l-2.7/cffi copying cffi/parse_c_type.h -> build/lib.linux-armv7l-2.7/cffi copying cffi/_embedding.h -> build/lib.linux-armv7l-2.7/cffi copying cffi/_cffi_errors.h -> build/lib.linux-armv7l-2.7/cffi running build_ext building '_cffi_backend' extension creating build/temp.linux-armv7l-2.7 creating build/temp.linux-armv7l-2.7/c arm-linux-gnueabihf-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fdebug-prefix-map=/build/python2.7-InigCj/python2.7-2.7.16=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC -DFFI_BUILDING=1 -DUSE__THREAD -DHAVE_SYNC_SYNCHRONIZE -I/usr/include/ffi -I/usr/include/libffi -I/usr/include/python2.7 -c c/_cffi_backend.c -o build/temp.linux-armv7l-2.7/c/_cffi_backend.o c/_cffi_backend.c:15:10: fatal error: ffi.h: No such file or directory #include <ffi.h> ^~~~~~~ compilation terminated. error: command 'arm-linux-gnueabihf-gcc' failed with exit status 1 ---------------------------------------- Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-Ez5ALp/cffi/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-record-ffnMrz/install-record.txt --single-version-externally-managed --prefix /tmp/pip-build-env-ix_DdY --compile" failed with error code 1 in /tmp/pip-install-Ez5ALp/cffi/ ---------------------------------------- Command "/usr/bin/python -m pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-ix_DdY --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple --extra-index-url https://www.piwheels.org/simple -- "setuptools >= 40.8.0" wheel "Cython >= 3.0a9" "cffi >= 1.12.3 ; platform_python_implementation == 'CPython'" "greenlet >= 0.4.17, < 2.0 ; platform_python_implementation == 'CPython'"" failed with error code 1 in None

terms of settlement

step 1

Execute the following command ：

python -m pip install --upgrade pip

Tips ：

[email protected]:~/HeatMap $ python -m pip install --upgrade pip
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting pip
  Downloading https://files.pythonhosted.org/packages/27/79/8a850fe3496446ff0d584327ae44e7500daf6764ca1a382d2d02789accf7/pip-20.3.4-py2.py3-none-any.whl (1.5MB)
    100% |████████████████████████████████| 1.5MB 172kB/s 
Installing collected packages: pip
Successfully installed pip-20.3.4

step 2

Execute the following command ：

 pip3 install gevent

The message is as follows ：

[email protected]:~/HeatMap $ pip3 install gevent
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting gevent
  Downloading https://www.piwheels.org/simple/gevent/gevent-21.12.0-cp37-cp37m-linux_armv7l.whl (2.7MB)
    100% |████████████████████████████████| 2.7MB 28kB/s 
Requirement already satisfied: setuptools in /usr/lib/python3/dist-packages (from gevent) (40.8.0)
Collecting greenlet<2.0,>=1.1.0; platform_python_implementation == "CPython" (from gevent)
  Downloading https://www.piwheels.org/simple/greenlet/greenlet-1.1.2-cp37-cp37m-linux_armv7l.whl (161kB)
    100% |████████████████████████████████| 163kB 152kB/s 
Collecting zope.event (from gevent)
  Downloading https://files.pythonhosted.org/packages/9e/85/b45408c64f3b888976f1d5b37eed8d746b8d5729a66a49ec846fda27d371/zope.event-4.5.0-py2.py3-none-any.whl
Collecting zope.interface (from gevent)
  Downloading https://www.piwheels.org/simple/zope-interface/zope.interface-5.4.0-cp37-cp37m-linux_armv7l.whl (240kB)
    100% |████████████████████████████████| 245kB 43kB/s 
Installing collected packages: greenlet, zope.event, zope.interface, gevent
Successfully installed gevent-21.12.0 greenlet-1.1.2 zope.event-4.5.0 zope.interface-5.4.0

Installation successful ！