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python3安装scrapy

admin 1月 28, 2021 0

  1. 查看python版本。
  2. 在http://www.lfd.uci.edu/~gohlke/pythonlibs/ ，搜索Lxml、Twisted、Scrapy并下载对应版本的库。
  3. 依次安装这几个库。
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    pip install lxml-4.2.5-cp36-cp36m-win_amd64.whl
    pip3 install Twisted-18.7.0-cp36-cp36m-win_amd64.whl
    pip3 install Scrapy-1.5.1-py2.py3-none-any.whl
  4. 下载pywin32相应版本并安装。
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    pip3 install pywin32-224-cp36-cp36m-win_amd64.whl

安装pywin32出现–Python version 3.3 required, which was not found in the registry

python3运行一下代码:

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from __future__ import print_function
import sys
try:
    from winreg import *
except ImportError:
    from _winreg import *
 

version = sys.version[:3]
installpath = sys.prefix
 
regpath = "SOFTWARE\Python\Pythoncore\{0}\".format(version)
installkey = "InstallPath"
pythonkey = "PythonPath"
pythonpath = "{0};{1}\Lib\;{2}\DLLs\".format(
    installpath, installpath, installpath)
 
 
def ():
    try:
        reg = OpenKey(HKEY_CURRENT_USER, regpath)
    except EnvironmentError as e:
        try:
            reg = CreateKey(HKEY_CURRENT_USER, regpath)
            SetValue(reg, installkey, REG_SZ, installpath)
            SetValue(reg, pythonkey, REG_SZ, pythonpath)
            CloseKey(reg)
        except:
            print("*** Unable to register!")
            return
        print("--- Python", version, "is now registered!")
        return
    if (QueryValue(reg, installkey) == installpath and
        QueryValue(reg, pythonkey) == pythonpath):
        CloseKey(reg)
        print("=== Python", version, "is already registered!")
        return
    CloseKey(reg)
    print("*** Unable to register!")
    print("*** You probably have another Python installation!")
 
if __name__ == "__main__":
    RegisterPy()

python2执行以下代码:

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# script to register Python 2.0 or later for use with win32all
# and other extensions that require Python registry settings
#
# written by Joakim Loew for Secret Labs AB / PythonWare
#
# source:
# http://www.pythonware.com/products/works/articles/regpy20.htm
#
# modified by Valentine Gogichashvili as described in http://www.mail-archive.com/[email protected]/msg10512.html
 
 
import sys
 
 
from _winreg import *
 
 

version = sys.version[:3]
installpath = sys.prefix
 
 
regpath = "SOFTWARE\Python\Pythoncore\%s\" % (version)
installkey = "InstallPath"
pythonkey = "PythonPath"
pythonpath = "%s;%s\Lib\;%s\DLLs\" % (
    installpath, installpath, installpath
)
 
 
def ():
    try:
        reg = OpenKey(HKEY_CURRENT_USER, regpath)
    except EnvironmentError as e:
        try:
            reg = CreateKey(HKEY_CURRENT_USER, regpath)
            SetValue(reg, installkey, REG_SZ, installpath)
            SetValue(reg, pythonkey, REG_SZ, pythonpath)
            CloseKey(reg)
        except:
            print "*** Unable to register!"
            return
        print "--- Python", version, "is now registered!"
        return
    if (QueryValue(reg, installkey) == installpath and
        QueryValue(reg, pythonkey) == pythonpath):
        CloseKey(reg)
        print "=== Python", version, "is already registered!"
        return
    CloseKey(reg)
    print "*** Unable to register!"
    print "*** You probably have another Python installation!"
 
 
if __name__ == "__main__":
    RegisterPy()

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