安装python所必要的软件

#!/usr/bin/env python # # Hi There! # You may be wondering what this giant blob of binary data here is, you might # even be worried that we're up to something nefarious (good for you for being # paranoid!). This is a base64 encoding of a zip file, this zip file contains # an entire copy of pip. # # Pip is a thing that installs packages, pip itself is a package that someone # might want to install, especially if they're looking to run this get-pip.py # script. Pip has a lot of code to deal with the security of installing # packages, various edge cases on various platforms, and other such sort of # "tribal knowledge" that has been encoded in its code base. Because of this # we basically include an entire copy of pip inside this blob. We do this # because the alternatives are attempt to implement a "minipip" that probably # doesn't do things correctly and has weird edge cases, or compress pip itself # down into a single file. # # If you're wondering how this is created, it is using an invoke task located # in tasks/generate.py called "installer". It can be invoked by using # ``invoke generate.installer``. import os.path import pkgutil import shutil import sys import struct import tempfile # Useful for very coarse version differentiation. PY2 = sys.version_info[0] == 2 PY3 = sys.version_info[0] == 3 if PY3: iterbytes = iter else: def iterbytes(buf): return (ord(byte) for byte in buf) try: from base64 import b85decode except ImportError: _b85alphabet = (b"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" b"abcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|}~") def b85decode(b): _b85dec = [None] * 256 for i, c in enumerate(iterbytes(_b85alphabet)): _b85dec[c] = i padding = (-len(b)) % 5 b = b + b'~' * padding out = [] packI = struct.Struct('!I').pack for i in range(0, len(b), 5): chunk = b[i:i + 5] acc = 0 try: for c in iterbytes(chunk): acc = acc * 85 + _b85dec[c] except TypeError: for j, c in enumerate(iterbytes(chunk)): if _b85dec[c] is None: raise ValueError( 'bad base85 character at position %d' % (i + j) ) raise try: out.append(packI(acc)) except struct.error: raise ValueError('base85 overflow in hunk starting at byte %d' % i) result = b''.join(out) if padding: result = result[:-padding] return result def bootstrap(tmpdir=None): # Import pip so we can use it to install pip and maybe setuptools too import pip from pip.commands.install import InstallCommand # Wrapper to provide default certificate with the lowest priority class CertInstallCommand(InstallCommand): def parse_args(self, args): # If cert isn't specified in config or environment, we provide our # own certificate through defaults. # This allows user to specify custom cert anywhere one likes: # config, environment variable or argv. if not self.parser.get_default_values().cert: self.parser.defaults["cert"] = cert_path # calculated below return super(CertInstallCommand, self).parse_args(args) pip.commands_dict["install"] = CertInstallCommand # We always want to install pip packages = ["pip"] # Check if the user has requested us not to install setuptools if "--no-setuptools" in sys.argv or os.environ.get("PIP_NO_SETUPTOOLS"): args = [x for x in sys.argv[1:] if x != "--no-setuptools"] else: args = sys.argv[1:] # We want to see if setuptools is available before attempting to # install it try: import setuptools # noqa except ImportError: packages += ["setuptools"] delete_tmpdir = False try: # Create a temporary directory to act as a working directory if we were # not given one. if tmpdir is None: tmpdir = tempfile.mkdtemp() delete_tmpdir = True # We need to extract the SSL certificates from requests so that they # can be passed to --cert cert_path = os.path.join(tmpdir, "cacert.pem") with open(cert_path, "wb") as cert: cert.write(pkgutil.get_data("pip._vendor.requests", "cacert.pem")) # Execute the included pip and use it to install the latest pip and # setuptools from PyPI sys.exit(pip.main(["install", "--upgrade"] + packages + args)) finally: # Remove our temporary directory if delete_tmpdir and tmpdir: shutil.rmtree(tmpdir, ignore_errors=True) def main(): tmpdir = None try: # Create a temporary working directory tmpdir = tempfile.mkdtemp() # Unpack the zipfile into the temporary directory pip_zip = os.path.join(tmpdir, "pip.zip") with open(pip_zip, "wb") as fp: fp.write(b85decode(DATA.replace(b"\n", b""))) # Add the zipfile to sys.path so that we can import it sys.path.insert(0, pip_zip) # Run the bootstrap bootstrap(tmpdir=tmpdir) finally: # Clean up our temporary working directory if tmpdir: shutil.rmtree(tmpdir, ignore_errors=True) DATA = b""" P)h>@6aWAK2mpkuL`Eaab{T68002QK000jF003}la4%n9X>MtBUtcb8d7WBuZ`-yK|KFd2brwikZEe} `-W!7FVMCi@1-dp!+t&xAh9FzC%|#Y9QcB`(`|i6tk|Jd(SvL)<CGmK7Jl_3ycgo3=uUf6XT8Zi_Ufr _#(ClP2*(kYZS+;4LR`D!jVqZ(uuzaOu*)}{g&y$ILU&`%PR9p8bb$3@cb*?mb&v&`1fKYcc^`WCxd} 8F*qE7k!n%9kxm3FdUR=UZ{GRKz}N=Y?i&*XleSA~7L6gAy>CT%0iZvK`xnJ_$fkrhHWN~~HEF{8m+$ ?XGk3tlU}CefbacI|nKX2$khty?AXa>jJKy5&j(`HZddPkF8wJ7JalHTTn3x#naW<+wbP)kbXJ(6TRS WX9gt1&FP-&-o^A%SQji%ld^>`@Cs*u+p`$L~pUWg?CDDyF4xSqRdt1NFSc;p20}##*<~Yyegzh75}y 6y3uK!uW#}#*J-QDQmnom*|d1V;DW8=U>bg9W_~bEFq<Tk$>fCPT8nM9=T*ZtQn5{$-|+8PBiV|xU0& A*Bzm_Knr*~A*DPl>a4Q9@tvRr}9j~l3;K^=94t{H%!Efilo!xPkgL9oQQHcijM`)yMb{v<*_OfV8K4 Vk2(9R6|LYmb~83<Rn1TAin5m<+TW*jyNcC|re@1(k6;6gQ5<pCrC{~X*~G%dMJ>b#r`-f^DzTedhJq h)huJqcIRYF-%LoN3;)by^=t8GKPlaL6_I5WJjZnVkkkSg`58)34L-reJQ2RPeZk3)vK0;}yM&v#iSZ 5bOyG{z(*^xE}A_kF<A;jAi$I;-Wg;h!Wh=J;qbmSE=}P#vpe1R;t5d+!fFf3cg`^+eq-fy5tRylXG& O>2zx2oK|X#!z>lvqSK(J`y4D|hizcReuhqn8@>>Y#t7})zDJc#i0-1wS0!hw1JklqYh1FdIFlO^6-d `RUY1O+m8gMj3{kyfpwK7116Edl`aNOKWfe7UE@xtc`>DXkHNGb~u)WA33zsKKZaBe&=<?-d_T&3^Z? 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