Scrapy 命令未被识别

Question

我已经成功在Windows Vista 64位平台上安装了Scrapy及其所有依赖项，并且是作为Site Package安装的。我在Python Shell中输入了以下内容：

Import Scrapy

并且没有出现错误。我刚开始学习如何使用Scrapy的教程。大多数教程建议使用以下命令行来设置一个新项目：

C:\Python27>scrapy startproject myproject

但是这条命令却出现了标题中提到的错误信息，提示Scrapy是一个无效的命令。我尝试修改我的环境变量，以便可以在命令提示符的任何文件位置使用这个命令。我在环境变量的末尾添加了以下内容：

C:\Python27;C:\Python27\Scripts;C:\Python27\Lib\site-packages\scrapy;C:\Python27\Scrapy

然而，这似乎并没有解决问题，因为我仍然收到相同的错误信息。我还尝试在以下位置使用命令提示符运行'scrapy startproject myproject'命令：

C:\Python27
C:\Python27\Scripts
C:\Python27\Scrapy

结果还是出现了同样的错误信息。我觉得我离解决方案很近，但就是无法让它正常工作。

有没有人能帮我找出我哪里出错了？

谢谢

编辑：

针对上面MattDMo的最后一条评论，现在这个命令可以正常工作了，但又出现了以下错误信息，我甚至不知道从哪里开始解决：

C:\Python27\Scripts>scrapy startprogram mrscript
Traceback (most recent call last):
  File "c:\Python27\Scripts\scrapy", line 3, in <module>
    from scrapy.cmdline import execute
  File "c:\Python27\lib\site-packages\scrapy\cmdline.py", line 9, in <module>
    from scrapy.crawler import CrawlerProcess
  File "c:\Python27\lib\site-packages\scrapy\crawler.py", line 3, in <module>
    from twisted.internet import reactor, defer
  File "c:\Python27\lib\site-packages\twisted\internet\reactor.py", line 38, in
<module>
    from twisted.internet import default
  File "c:\Python27\lib\site-packages\twisted\internet\default.py", line 56, in
<module>
    install = _getInstallFunction(platform)
  File "c:\Python27\lib\site-packages\twisted\internet\default.py", line 50, in
_getInstallFunction
    from twisted.internet.selectreactor import install
  File "c:\Python27\lib\site-packages\twisted\internet\selectreactor.py", line 1
8, in <module>
    from twisted.internet import posixbase
  File "c:\Python27\lib\site-packages\twisted\internet\posixbase.py", line 24, i
n <module>
    from twisted.internet import error, udp, tcp
  File "c:\Python27\lib\site-packages\twisted\internet\tcp.py", line 29, in <mod
ule>
    from twisted.internet._newtls import (
  File "c:\Python27\lib\site-packages\twisted\internet\_newtls.py", line 21, in
<module>
    from twisted.protocols.tls import TLSMemoryBIOFactory, TLSMemoryBIOProtocol
  File "c:\Python27\lib\site-packages\twisted\protocols\tls.py", line 41, in <mo
dule>
    from OpenSSL.SSL import Error, ZeroReturnError, WantReadError
  File "c:\Python27\lib\site-packages\OpenSSL\__init__.py", line 8, in <module>
    from OpenSSL import rand, crypto, SSL
  File "c:\Python27\lib\site-packages\OpenSSL\rand.py", line 11, in <module>
    from OpenSSL._util import (
  File "c:\Python27\lib\site-packages\OpenSSL\_util.py", line 4, in <module>
    binding = Binding()
  File "c:\Python27\lib\site-packages\cryptography\hazmat\bindings\openssl\bindi
ng.py", line 87, in __init__
    self._ensure_ffi_initialized()
  File "c:\Python27\lib\site-packages\cryptography\hazmat\bindings\openssl\bindi
ng.py", line 106, in _ensure_ffi_initialized
    libraries=libraries,
  File "c:\Python27\lib\site-packages\cryptography\hazmat\bindings\utils.py", li
ne 80, in build_ffi
    extra_link_args=extra_link_args,
  File "c:\Python27\lib\site-packages\cffi\api.py", line 341, in verify
    lib = self.verifier.load_library()
  File "c:\Python27\lib\site-packages\cffi\verifier.py", line 75, in load_librar
y
    return self._load_library()
  File "c:\Python27\lib\site-packages\cffi\verifier.py", line 151, in _load_libr
ary
    return self._vengine.load_library()
  File "c:\Python27\lib\site-packages\cffi\vengine_cpy.py", line 138, in load_li
brary
    raise ffiplatform.VerificationError(error)
cffi.ffiplatform.VerificationError: importing 'c:\\Python27\\lib\\site-packages\
\cryptography\\_Cryptography_cffi_444d7397xa22f8491.pyd': DLL load failed: The s
pecified module could not be found.

这实际上是错误日志还是只是标准的输出？另外，能不能请人解释一下，为什么在我的Python脚本中添加一个.bat文件会让这个命令正常工作？

谢谢

错误处理 windows 命令行教程环境变量项目设置 scrapy 依赖项

Scrapy 命令未被识别

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