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Mac中Python 3环境下安装scrapy的艺术教程

2019年2月2日 - www6165com

During handling of the above exception, another exception occurred:

更新 OpenSSL 成功,再一次尝试推行 scrapy

Windows8下安装Python的BeautifulSoup,windows8python

运作条件:Windows 8.1
Python:2.7.6

在装置的时候,我动用的pip来开展安装,命令如下:

复制代码 代码如下:

pip install beautifulsoup4

运转的时候,报错如下:

复制代码 代码如下:

Exception:
Traceback (most recent call last):
  File “J:\Program Files
(x86)\Python\Python27\lib\site-packages\pip\basecomm
.py”, line 122, in main
    status = self.run(options, args)
  File “J:\Program Files
(x86)\Python\Python27\lib\site-packages\pip\commands
stall.py”, line 278, in run
    requirement_set.prepare_files(finder,
force_root_egg_info=self.bundle, bu
e=self.bundle)
  File “J:\Program Files
(x86)\Python\Python27\lib\site-packages\pip\req.py”,
ne 1229, in prepare_files
    req_to_install.run_egg_info()
  File “J:\Program Files
(x86)\Python\Python27\lib\site-packages\pip\req.py”,
ne 292, in run_egg_info
    logger.notify(‘Running setup.py (path:%s) egg_info for package %s’
% (sel
etup_py, self.name))
  File “J:\Program Files
(x86)\Python\Python27\lib\site-packages\pip\req.py”,
ne 265, in setup_py
    import setuptools
  File “build\bdist.win-amd64\egg\setuptools\__init__.py”, line
11, in <modul
    from setuptools.extension import Extension
  File “build\bdist.win-amd64\egg\setuptools\extension.py”, line 5,
in <modul
  File “build\bdist.win-amd64\egg\setuptools\dist.py”, line 15, in
<module>
  File “build\bdist.win-amd64\egg\setuptools\compat.py”, line 19, in
<module>
  File “J:\Program Files
(x86)\Python\Python27\lib\SimpleHTTPServer.py”, line
, in <module>
    class
SimpleHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
  File “J:\Program Files
(x86)\Python\Python27\lib\SimpleHTTPServer.py”, line
8, in SimpleHTTPRequestHandler
    mimetypes.init() # try to read system mime.types
  File “J:\Program Files (x86)\Python\Python27\lib\mimetypes.py”,
line 358, i
nit
    db.read_windows_registry()
  File “J:\Program Files (x86)\Python\Python27\lib\mimetypes.py”,
line 258, i
ead_windows_registry
    for subkeyname in enum_types(hkcr):
  File “J:\Program Files (x86)\Python\Python27\lib\mimetypes.py”,
line 249, i
num_types
    ctype = ctype.encode(default_encoding) # omit in 3.x!
UnicodeDecodeError: ‘ascii’ codec can’t decode byte 0xb0 in position 1:
ordin
not in range(128)

Storing debug log for failure in
C:\Users\Administrator\pip\pip.log

竭泽而渔办法:打开C:\Python27\Lib下的 mimetypes.py
文件,找到差不多256行的

复制代码 代码如下:

default_encoding = sys.getdefaultencoding()

改成:

复制代码 代码如下:

if sys.getdefaultencoding() != ‘gbk’:
    reload(sys)
    sys.setdefaultencoding(‘gbk’)
default_encoding = sys.getdefaultencoding()

安装成功后,验证是或不是安装成功:

复制代码 代码如下:

C:\Users\Administrator>python
Python 2.7.6 (default, Nov 10 2013, 19:24:24) [MSC v.1500 64 bit
(AMD64)] on 32
Type “help”, “copyright”, “credits” or “license” for more information.
>>> from bs4 import BeautifulSoup
>>> exit()

假若“from bs4 import
BeautifulSoup”没有报错的话,则印证安装成功,否则,将报类似错误如下:

复制代码 代码如下:

Traceback (most recent call last):
  File “<stdin>”, line 1, in <module>
ImportError: No module named bs4

运行条件:Windows 8.1 Python:2.7.6
在装置的时候,我利用的pip来展开设置,命令如下: 复制代码 代…

报错:

e:\python3.6.0\lib\site-packages\pip\compat\__init__.py”, line
73, in console_to_str return s.decode(sys.__stdout__.encoding)

UnicodeDecodeError: ‘utf-8’ codec can’t decode byte 0xce in position 72:
invalid continuation byte

参考连接方式:

  1. 跻身到您项目标目录,执行 scrapy startproject firstscrapy成立firstscrapy 爬虫项目

    ➜ PycharmProjects scrapy startproject firstscrapy
    New Scrapy project ‘firstscrapy’, using template directory ‘/Library/Python/2.7/site-packages/scrapy/templates/project’, created in:
    /Users/wangruofeng/PycharmProjects/firstscrapy

    You can start your first spider with:
    cd firstscrapy
    scrapy genspider example example.com
    ➜ PycharmProjects

总结:

慎用Windows呀

    line = console_to_str(proc.stdout.readline())

图片 1

解决:

运用Git Bush命令行安装

  File
“e:\python\envs\py2scripy\lib\site-packages\pip\basecommand.py”,
line 215, in main

# 在Mac上Python3环境下安装scrapy

 

前不久抽空想深造一下python的爬虫框架scrapy,在mac下安装的时候碰着了难点,逐一解决了难点,分享一下,话不多说了,来共同看看详细的介绍吧。

Exception:

步骤如下:

  File
“e:\python\envs\py2scripy\lib\site-packages\pip\commands\install.py”,
line 342, in run

  1. 输入 pip install scrapy执行 scrapy 安装

    ➜ ~ pip install Scrapy
    Collecting Scrapy
    Using cached Scrapy-1.4.0-py2.py3-none-any.whl
    Collecting lxml (from Scrapy)
    Using cached lxml-4.1.0-cp27-cp27m-macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl
    Collecting PyDispatcher>=2.0.5 (from Scrapy)
    Using cached PyDispatcher-2.0.5.tar.gz
    Collecting Twisted>=13.1.0 (from Scrapy)
    Using cached Twisted-17.9.0.tar.bz2
    Requirement already satisfied: pyOpenSSL in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from Scrapy)
    Collecting queuelib (from Scrapy)
    Using cached queuelib-1.4.2-py2.py3-none-any.whl
    Collecting cssselect>=0.9 (from Scrapy)
    Using cached cssselect-1.0.1-py2.py3-none-any.whl
    Collecting parsel>=1.1 (from Scrapy)
    Using cached parsel-1.2.0-py2.py3-none-any.whl
    Collecting service-identity (from Scrapy)
    Using cached service_identity-17.0.0-py2.py3-none-any.whl
    Collecting six>=1.5.2 (from Scrapy)
    Using cached six-1.11.0-py2.py3-none-any.whl
    Collecting w3lib>=1.17.0 (from Scrapy)
    Using cached w3lib-1.18.0-py2.py3-none-any.whl
    Requirement already satisfied: zope.interface>=3.6.0 in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from Twisted>=13.1.0->Scrapy)
    Collecting constantly>=15.1 (from Twisted>=13.1.0->Scrapy)
    Using cached constantly-15.1.0-py2.py3-none-any.whl
    Collecting incremental>=16.10.1 (from Twisted>=13.1.0->Scrapy)
    Using cached incremental-17.5.0-py2.py3-none-any.whl
    Collecting Automat>=0.3.0 (from Twisted>=13.1.0->Scrapy)
    Using cached Automat-0.6.0-py2.py3-none-any.whl
    Collecting hyperlink>=17.1.1 (from Twisted>=13.1.0->Scrapy)
    Using cached hyperlink-17.3.1-py2.py3-none-any.whl
    Collecting pyasn1 (from service-identity->Scrapy)
    Using cached pyasn1-0.3.7-py2.py3-none-any.whl
    Collecting pyasn1-modules (from service-identity->Scrapy)
    Using cached pyasn1_modules-0.1.5-py2.py3-none-any.whl
    Collecting attrs (from service-identity->Scrapy)
    Using cached attrs-17.2.0-py2.py3-none-any.whl
    Requirement already satisfied: setuptools in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from zope.interface>=3.6.0->Twisted>=13.1.0->Scrapy)
    Installing collected packages: lxml, PyDispatcher, constantly, incremental, six, attrs, Automat, hyperlink, Twisted, queuelib, cssselect, w3lib, parsel, pyasn1, pyasn1-modules, service-identity, Scrapy
    Exception:
    Traceback (most recent call last):
    File “/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/basecommand.py”, line 215, in main
    status = self.run(options, args)
    File “/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/commands/install.py”, line 342, in run
    prefix=options.prefix_path,
    File “/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/req/req_set.py”, line 784, in install
    **kwargs
    File “/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/req/req_install.py”, line 851, in install
    self.move_wheel_files(self.source_dir, root=root, prefix=prefix)
    File “/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/req/req_install.py”, line 1064, in move_wheel_files
    isolated=self.isolated,
    File “/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/wheel.py”, line 345, in move_wheel_files
    clobber(source, lib_dir, True)
    File “/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/wheel.py”, line 316, in clobber
    ensure_dir(destdir)
    File “/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/utils/init.py”, line 83, in ensure_dir
    os.makedirs(path)
    File “/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py”, line 157, in makedirs
    mkdir(name, mode)
    OSError: [Errno 13] Permission denied: ‘/Library/Python/2.7/site-packages/lxml’

UnicodeDecodeError: ‘utf-8’ codec can’t decode byte 0xb6 in position 30:
invalid start byte

➜ ~ sudo pip install --upgrade pyopenssl
Password:
The directory '/Users/wangruofeng/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/Users/wangruofeng/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting pyopenssl
 Downloading pyOpenSSL-17.3.0-py2.py3-none-any.whl (51kB)
 100% |████████████████████████████████| 51kB 132kB/s 
Requirement already up-to-date: six>=1.5.2 in /Library/Python/2.7/site-packages (from pyopenssl)
Collecting cryptography>=1.9 (from pyopenssl)
 Downloading cryptography-2.1.1-cp27-cp27m-macosx_10_6_intel.whl (1.5MB)
 100% |████████████████████████████████| 1.5MB 938kB/s 
Collecting cffi>=1.7; platform_python_implementation != "PyPy" (from cryptography>=1.9->pyopenssl)
 Downloading cffi-1.11.2-cp27-cp27m-macosx_10_6_intel.whl (238kB)
 100% |████████████████████████████████| 245kB 2.2MB/s 
Collecting enum34; python_version < "3" (from cryptography>=1.9->pyopenssl)
 Downloading enum34-1.1.6-py2-none-any.whl
Collecting idna>=2.1 (from cryptography>=1.9->pyopenssl)
 Downloading idna-2.6-py2.py3-none-any.whl (56kB)
 100% |████████████████████████████████| 61kB 3.1MB/s 
Collecting asn1crypto>=0.21.0 (from cryptography>=1.9->pyopenssl)
 Downloading asn1crypto-0.23.0-py2.py3-none-any.whl (99kB)
 100% |████████████████████████████████| 102kB 2.7MB/s 
Collecting ipaddress; python_version < "3" (from cryptography>=1.9->pyopenssl)
 Downloading ipaddress-1.0.18-py2-none-any.whl
Collecting pycparser (from cffi>=1.7; platform_python_implementation != "PyPy"->cryptography>=1.9->pyopenssl)
 Downloading pycparser-2.18.tar.gz (245kB)
 100% |████████████████████████████████| 256kB 3.6MB/s 
Installing collected packages: pycparser, cffi, enum34, idna, asn1crypto, ipaddress, cryptography, pyopenssl
 Running setup.py install for pycparser ... done
 Found existing installation: pyOpenSSL 0.13.1
 DEPRECATION: Uninstalling a distutils installed project (pyopenssl) has been deprecated and will be removed in a future version. This is due to the fact that uninstalling a distutils project will only partially uninstall the project.
 Uninstalling pyOpenSSL-0.13.1:
 Successfully uninstalled pyOpenSSL-0.13.1
Successfully installed asn1crypto-0.23.0 cffi-1.11.2 cryptography-2.1.1 enum34-1.1.6 idna-2.6 ipaddress-1.0.18 pycparser-2.18 pyopenssl-17.3.0

  File
“e:\python\envs\py2scripy\lib\site-packages\pip\req\req_install.py”,
line 878, in install

  1. 从官网 下载最新版本Python
    3.6.3(本地飞快下载安装:)

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