python3安装scapy_Python3 from scapy.all import * 时报错汗血宝马

系统是OSX 10.11.5，scapy安装成功之后，本想着应该可以了，但是好像又出现了一些问题。先是少了几个包，这倒是好解决。但是接下来这个我就有点蒙了＝＝，shlex.py 怎么看都是Python自带的，怎么会出错呢＝＝

下面是Traceback:

from scapy.all import *

Traceback (most recent call last):

File “”, line 1, in

File “/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/scapy/all.py”, line 25, in

1from .route import *

File “/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/scapy/route.py”, line 163, in

1conf.route=Route()

File “/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/scapy/route.py”, line 22, in init

1self.resync()

File “/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/scapy/route.py”, line 31, in resync

1self.routes = read_routes()

File “/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/scapy/arch/unix.py”, line 37, in read_routes

1f=check_output(["netstat", "-rn"], universal_newlines = True) # -f inet

File “/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/subprocess.py”, line 629, in check_output

1**kwargs).stdout

File “/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/run/__init__.py”, line 145, in new

1process = cls.create_process(command, stdin, cwd=cwd, env=env, shell=shell)

File “/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/run/__init__.py”, line 121, in create_process

1shlex.split(command),

File “/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/shlex.py”, line 273, in split

1return list(lex)

File “/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/shlex.py”, line 263, in next

1token = self.get_token()

File “/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/shlex.py”, line 90, in get_token

1raw = self.read_token()

File “/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/shlex.py”, line 118, in read_token

1nextchar = self.instream.read(1)

AttributeError: ‘list’ object has no attribute ‘read’

下面是shlex.py:

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302"""A lexical analyzer class for simple shell-like syntaxes."""

# Module and documentation by Eric S. Raymond, 21 Dec 1998

# Input stacking and error message cleanup added by ESR, March 2000

# push_source() and pop_source() made explicit by ESR, January 2001.

# Posix compliance, split(), string arguments, and

# iterator interface by Gustavo Niemeyer, April 2003.

import os

import re

import sys

from collections import deque

from io import StringIO

__all__ = ["shlex", "split", "quote"]

class shlex:

"A lexical analyzer class for simple shell-like syntaxes."

def __init__(self, instream=None, infile=None, posix=False):

if isinstance(instream, str):

instream = StringIO(instream)

if instream is not None:

self.instream = instream

self.infile = infile

else:

self.instream = sys.stdin

self.infile = None

self.posix = posix

if posix:

self.eof = None

else:

self.eof = ''

self.commenters = '#'

self.wordchars = ('abcdfeghijklmnopqrstuvwxyz'

'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_')

if self.posix:

self.wordchars += ('ßàáâãäåæçèéêëìíîïðñòóôõöøùúûüýþÿ'

'ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞ')

self.whitespace = ' \t\r\n'

self.whitespace_split = False

self.quotes = '\'"'

self.escape = '\'

self.escapedquotes = '"'

self.state = ' '

self.pushback = deque()

self.lineno = 1

self.debug = 0

self.token = ''

self.filestack = deque()

self.source = None

def push_token(self, tok):

"Push a token onto the stack popped by the get_token method"

if self.debug >= 1:

print("shlex: pushing token " + repr(tok))

self.pushback.appendleft(tok)

def push_source(self, newstream, newfile=None):

"Push an input source onto the lexer's input source stack."

if isinstance(newstream, str):

newstream = StringIO(newstream)

self.filestack.appendleft((self.infile, self.instream, self.lineno))

self.infile = newfile

self.instream = newstream

self.lineno = 1

if self.debug:

if newfile is not None:

print('shlex: pushing to file %s' % (self.infile,))

else:

print('shlex: pushing to stream %s' % (self.instream,))

def pop_source(self):

"Pop the input source stack."

self.instream.close()

(self.infile, self.instream, self.lineno) = self.filestack.popleft()

if self.debug:

print('shlex: popping to %s, line %d' \

% (self.instream, self.lineno))

self.state = ' '

def get_token(self):

"Get a token from the input stream (or from stack if it's nonempty)"

if self.pushback:

tok = self.pushback.popleft()

if self.debug >= 1:

print("shlex: popping token " + repr(tok))

return tok

# No pushback. Get a token.

raw = self.read_token()

# Handle inclusions

if self.source is not None:

while raw == self.source:

spec = self.sourcehook(self.read_token())

if spec:

(newfile, newstream) = spec

self.push_source(newstream, newfile)

raw = self.get_token()

# Maybe we got EOF instead?

while raw == self.eof:

if not self.filestack:

return self.eof

else:

self.pop_source()

raw = self.get_token()

# Neither inclusion nor EOF

if self.debug >= 1:

if raw != self.eof:

print("shlex: token=" + repr(raw))

else:

print("shlex: token=EOF")

return raw

def read_token(self):

quoted = False

escapedstate = ' '

while True:

nextchar = self.instream.read(1)

if nextchar == '\n':

self.lineno = self.lineno + 1

if self.debug >= 3:

print("shlex: in state", repr(self.state), \

"I see character:", repr(nextchar))

if self.state is None:

self.token = '' # past end of file

break

elif self.state == ' ':

if not nextchar:

self.state = None # end of file

break

elif nextchar in self.whitespace:

if self.debug >= 2:

print("shlex: I see whitespace in whitespace state")

if self.token or (self.posix and quoted):

break # emit current token

else:

continue

elif nextchar in self.commenters:

self.instream.readline()

self.lineno = self.lineno + 1

elif self.posix and nextchar in self.escape:

escapedstate = 'a'

self.state = nextchar

elif nextchar in self.wordchars:

self.token = nextchar

self.state = 'a'

elif nextchar in self.quotes:

if not self.posix:

self.token = nextchar

self.state = nextchar

elif self.whitespace_split:

self.token = nextchar

self.state = 'a'

else:

self.token = nextchar

if self.token or (self.posix and quoted):

break # emit current token

else:

continue

elif self.state in self.quotes:

quoted = True

if not nextchar: # end of file

if self.debug >= 2:

print("shlex: I see EOF in quotes state")

# XXX what error should be raised here?

raise ValueError("No closing quotation")

if nextchar == self.state:

if not self.posix:

self.token = self.token + nextchar

self.state = ' '

break

else:

self.state = 'a'

elif self.posix and nextchar in self.escape and \

self.state in self.escapedquotes:

escapedstate = self.state

self.state = nextchar

else:

self.token = self.token + nextchar

elif self.state in self.escape:

if not nextchar: # end of file

if self.debug >= 2:

print("shlex: I see EOF in escape state")

# XXX what error should be raised here?

raise ValueError("No escaped character")

# In posix shells, only the quote itself or the escape

# character may be escaped within quotes.

if escapedstate in self.quotes and \

nextchar != self.state and nextchar != escapedstate:

self.token = self.token + self.state

self.token = self.token + nextchar

self.state = escapedstate

elif self.state == 'a':

if not nextchar:

self.state = None # end of file

break

elif nextchar in self.whitespace:

if self.debug >= 2:

print("shlex: I see whitespace in word state")

self.state = ' '

if self.token or (self.posix and quoted):

break # emit current token

else:

continue

elif nextchar in self.commenters:

self.instream.readline()

self.lineno = self.lineno + 1

if self.posix:

self.state = ' '

if self.token or (self.posix and quoted):

break # emit current token

else:

continue

elif self.posix and nextchar in self.quotes:

self.state = nextchar

elif self.posix and nextchar in self.escape:

escapedstate = 'a'

self.state = nextchar

elif nextchar in self.wordchars or nextchar in self.quotes \

or self.whitespace_split:

self.token = self.token + nextchar

else:

self.pushback.appendleft(nextchar)

if self.debug >= 2:

print("shlex: I see punctuation in word state")

self.state = ' '

if self.token:

break # emit current token

else:

continue

result = self.token

self.token = ''

if self.posix and not quoted and result == '':

result = None

if self.debug > 1:

if result:

print("shlex: raw token=" + repr(result))

else:

print("shlex: raw token=EOF")

return result

def sourcehook(self, newfile):

"Hook called on a filename to be sourced."

if newfile[0] == '"':

newfile = newfile[1:-1]

# This implements cpp-like semantics for relative-path inclusion.

if isinstance(self.infile, str) and not os.path.isabs(newfile):

newfile = os.path.join(os.path.dirname(self.infile), newfile)

return (newfile, open(newfile, "r"))

def error_leader(self, infile=None, lineno=None):

"Emit a C-compiler-like, Emacs-friendly error-message leader."

if infile is None:

infile = self.infile

if lineno is None:

lineno = self.lineno

return ""%s", line %d: " % (infile, lineno)

def __iter__(self):

return self

def __next__(self):

token = self.get_token()

if token == self.eof:

raise StopIteration

return token

def split(s, comments=False, posix=True):

lex = shlex(s, posix=posix)

lex.whitespace_split = True

if not comments:

lex.commenters = ''

return list(lex)

_find_unsafe = re.compile(r'[^\w@%+=:,./-]', re.ASCII).search

def quote(s):

"""Return a shell-escaped version of the string *s*."""

if not s:

return "''"

if _find_unsafe(s) is None:

return s

# use single quotes, and put single quotes into double quotes

# the string $'b is then quoted as '$'"'"'b'

return "'" + s.replace("'", "'"'"'") + "'"

def _print_tokens(lexer):

while 1:

tt = lexer.get_token()

if not tt:

break

print("Token: " + repr(tt))

if __name__ == '__main__':

if len(sys.argv) == 1:

_print_tokens(shlex())

else:

fn = sys.argv[1]

with open(fn) as f:

_print_tokens(shlex(f, fn))

all模块是什么？

30In [3]: dir(scrapy)

Out[3]:

['Field',

'FormRequest',

'Item',

'Request',

'Selector',

'Spider',

'__all__',

'__builtins__',

'__cached__',

'__doc__',

'__file__',

'__loader__',

'__name__',

'__package__',

'__path__',

'__spec__',

'__version__',

'_txv',

'exceptions',

'http',

'item',

'optional_features',

'selector',

'signals',

'spiders',

'twisted_version',

'utils',

'version_info']

为什么我dir不出来。

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python3安装scapy_Python3 from scapy.all import * 时报错汗血宝马

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