在虚拟环境下pip install mysqlclient报错，在源环境下pip install myclient没问题，pip3 install也同样报错，虚拟环境下的是python3版本。
报错如下

Looking in indexes: https://mirrors.aliyun.com/pypi/simple
Collecting mysqlclient
Downloading https://mirrors.aliyun.com/pypi/packages/f8/9b/5db9a03e2088a87c26e3e4d4c7f7e8f4c2dbae610f9521cdfac15755a795/mysqlclient-1.4.5.tar.gz (86kB)
|████████████████████████████████| 92kB 1.4MB/s
Building wheels for collected packages: mysqlclient
Building wheel for mysqlclient (setup.py) … error
ERROR: Command errored out with exit status 1:
command: /www/weixin_app/weixin_flask/bin/python3 -u -c ‘import sys, setuptools, tokenize; sys.argv[0] = ‘"’"’/tmp/pip-install-ykqd30g4/mysqlclient/setup.py’"’"’; file=’"’"’/tmp/pip-install-ykqd30g4/mysqlclient/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-35zoq_v_ --python-tag cp36
cwd: /tmp/pip-install-ykqd30g4/mysqlclient/
Complete output (31 lines):
running bdist_wheel
running build
running build_py
creating build
creating build/lib.linux-x86_64-3.6
creating build/lib.linux-x86_64-3.6/MySQLdb
copying MySQLdb/init.py -> build/lib.linux-x86_64-3.6/MySQLdb
copying MySQLdb/exceptions.py -> build/lib.linux-x86_64-3.6/MySQLdb
copying MySQLdb/compat.py -> build/lib.linux-x86_64-3.6/MySQLdb
copying MySQLdb/connections.py -> build/lib.linux-x86_64-3.6/MySQLdb
copying MySQLdb/converters.py -> build/lib.linux-x86_64-3.6/MySQLdb
copying MySQLdb/cursors.py -> build/lib.linux-x86_64-3.6/MySQLdb
copying MySQLdb/release.py -> build/lib.linux-x86_64-3.6/MySQLdb
copying MySQLdb/times.py -> build/lib.linux-x86_64-3.6/MySQLdb
creating build/lib.linux-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/init.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/CLIENT.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/CR.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/ER.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/FIELD_TYPE.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/FLAG.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
running build_ext
building 'MySQLdb.mysql’ extension
creating build/temp.linux-x86_64-3.6
creating build/temp.linux-x86_64-3.6/MySQLdb
gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -fPIC -Dversion_info=(1,4,5,‘final’,0) -D__version=1.4.5 -I/usr/include/mysql -I/usr/include/python3.6m -c MySQLdb/_mysql.c -o build/temp.linux-x86_64-3.6/MySQLdb/_mysql.o -m64
MySQLdb/_mysql.c:38:20: fatal error: Python.h: No such file or directory
#include “Python.h”
^
compilation terminated.
error: command ‘gcc’ failed with exit status 1

ERROR: Failed building wheel for mysqlclient
Running setup.py clean for mysqlclient
Failed to build mysqlclient
Installing collected packages: mysqlclient
Running setup.py install for mysqlclient … error
ERROR: Command errored out with exit status 1:
command: /www/weixin_app/weixin_flask/bin/python3 -u -c ‘import sys, setuptools, tokenize; sys.argv[0] = ‘"’"’/tmp/pip-install-ykqd30g4/mysqlclient/setup.py’"’"’; file=’"’"’/tmp/pip-install-ykqd30g4/mysqlclient/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-76aglbqo/install-record.txt --single-version-externally-managed --compile --install-headers /www/weixin_app/weixin_flask/include/site/python3.6/mysqlclient
cwd: /tmp/pip-install-ykqd30g4/mysqlclient/
Complete output (31 lines):
running install
running build
running build_py
creating build
creating build/lib.linux-x86_64-3.6
creating build/lib.linux-x86_64-3.6/MySQLdb
copying MySQLdb/init.py -> build/lib.linux-x86_64-3.6/MySQLdb
copying MySQLdb/exceptions.py -> build/lib.linux-x86_64-3.6/MySQLdb
copying MySQLdb/compat.py -> build/lib.linux-x86_64-3.6/MySQLdb
copying MySQLdb/connections.py -> build/lib.linux-x86_64-3.6/MySQLdb
copying MySQLdb/converters.py -> build/lib.linux-x86_64-3.6/MySQLdb
copying MySQLdb/cursors.py -> build/lib.linux-x86_64-3.6/MySQLdb
copying MySQLdb/release.py -> build/lib.linux-x86_64-3.6/MySQLdb
copying MySQLdb/times.py -> build/lib.linux-x86_64-3.6/MySQLdb
creating build/lib.linux-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/init.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/CLIENT.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/CR.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/ER.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/FIELD_TYPE.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/FLAG.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
running build_ext
building 'MySQLdb.mysql’ extension
creating build/temp.linux-x86_64-3.6
creating build/temp.linux-x86_64-3.6/MySQLdb
gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -fPIC -Dversion_info=(1,4,5,‘final’,0) -D__version=1.4.5 -I/usr/include/mysql -I/usr/include/python3.6m -c MySQLdb/_mysql.c -o build/temp.linux-x86_64-3.6/MySQLdb/_mysql.o -m64
MySQLdb/_mysql.c:38:20: fatal error: Python.h: No such file or directory
#include “Python.h”
^
compilation terminated.
error: command ‘gcc’ failed with exit status 1
----------------------------------------
ERROR: Command errored out with exit status 1: /www/weixin_app/weixin_flask/bin/python3 -u -c ‘import sys, setuptools, tokenize; sys.argv[0] = ‘"’"’/tmp/pip-install-ykqd30g4/mysqlclient/setup.py’"’"’; file=’"’"’/tmp/pip-install-ykqd30g4/mysqlclient/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-76aglbqo/install-record.txt --single-version-externally-managed --compile --install-headers /www/weixin_app/weixin_flask/include/site/python3.6/mysqlclient Check the logs for full command output.