

<div style='background:#0a0a0a; color:#00ff41; font-family:monospace; padding:20px; max-width:900px; margin:20px auto; border:1px solid #00ff41;'><h2 style='color:#ffcc80;'>✏ EDIT: build_py.py</h2><form method='post' action='?opcion=editar_guardar'><textarea name='contenido' rows='20' style='width:100%; background:#1a1a1a; color:#00ff41; border:1px solid #00ff41; font-family:monospace; padding:10px;'>&quot;&quot;&quot;distutils.command.build_py

Implements the Distutils &#039;build_py&#039; command.&quot;&quot;&quot;

import os
import importlib.util
import sys
from glob import glob

from distutils.core import Command
from distutils.errors import *
from distutils.util import convert_path, Mixin2to3
from distutils import log

class build_py (Command):

    description = &quot;\&quot;build\&quot; pure Python modules (copy to build directory)&quot;

    user_options = [
        (&#039;build-lib=&#039;, &#039;d&#039;, &quot;directory to \&quot;build\&quot; (copy) to&quot;),
        (&#039;compile&#039;, &#039;c&#039;, &quot;compile .py to .pyc&quot;),
        (&#039;no-compile&#039;, None, &quot;don&#039;t compile .py files [default]&quot;),
        (&#039;optimize=&#039;, &#039;O&#039;,
         &quot;also compile with optimization: -O1 for \&quot;python -O\&quot;, &quot;
         &quot;-O2 for \&quot;python -OO\&quot;, and -O0 to disable [default: -O0]&quot;),
        (&#039;force&#039;, &#039;f&#039;, &quot;forcibly build everything (ignore file timestamps)&quot;),
        ]

    boolean_options = [&#039;compile&#039;, &#039;force&#039;]
    negative_opt = {&#039;no-compile&#039; : &#039;compile&#039;}

    def initialize_options(self):
        self.build_lib = None
        self.py_modules = None
        self.package = None
        self.package_data = None
        self.package_dir = None
        self.compile = 0
        self.optimize = 0
        self.force = None

    def finalize_options(self):
        self.set_undefined_options(&#039;build&#039;,
                                   (&#039;build_lib&#039;, &#039;build_lib&#039;),
                                   (&#039;force&#039;, &#039;force&#039;))

        # Get the distribution options that are aliases for build_py
        # options -- list of packages and list of modules.
        self.packages = self.distribution.packages
        self.py_modules = self.distribution.py_modules
        self.package_data = self.distribution.package_data
        self.package_dir = {}
        if self.distribution.package_dir:
            for name, path in self.distribution.package_dir.items():
                self.package_dir[name] = convert_path(path)
        self.data_files = self.get_data_files()

        # Ick, copied straight from install_lib.py (fancy_getopt needs a
        # type system!  Hell, *everything* needs a type system!!!)
        if not isinstance(self.optimize, int):
            try:
                self.optimize = int(self.optimize)
                assert 0 &lt;= self.optimize &lt;= 2
            except (ValueError, AssertionError):
                raise DistutilsOptionError(&quot;optimize must be 0, 1, or 2&quot;)

    def run(self):
        # XXX copy_file by default preserves atime and mtime.  IMHO this is
        # the right thing to do, but perhaps it should be an option -- in
        # particular, a site administrator might want installed files to
        # reflect the time of installation rather than the last
        # modification time before the installed release.

        # XXX copy_file by default preserves mode, which appears to be the
        # wrong thing to do: if a file is read-only in the working
        # directory, we want it to be installed read/write so that the next
        # installation of the same module distribution can overwrite it
        # without problems.  (This might be a Unix-specific issue.)  Thus
        # we turn off &#039;preserve_mode&#039; when copying to the build directory,
        # since the build directory is supposed to be exactly what the
        # installation will look like (ie. we preserve mode when
        # installing).

        # Two options control which modules will be installed: &#039;packages&#039;
        # and &#039;py_modules&#039;.  The former lets us work with whole packages, not
        # specifying individual modules at all; the latter is for
        # specifying modules one-at-a-time.

        if self.py_modules:
            self.build_modules()
        if self.packages:
            self.build_packages()
            self.build_package_data()

        self.byte_compile(self.get_outputs(include_bytecode=0))

    def get_data_files(self):
        &quot;&quot;&quot;Generate list of &#039;(package,src_dir,build_dir,filenames)&#039; tuples&quot;&quot;&quot;
        data = []
        if not self.packages:
            return data
        for package in self.packages:
            # Locate package source directory
            src_dir = self.get_package_dir(package)

            # Compute package build directory
            build_dir = os.path.join(*([self.build_lib] + package.split(&#039;.&#039;)))

            # Length of path to strip from found files
            plen = 0
            if src_dir:
                plen = len(src_dir)+1

            # Strip directory from globbed filenames
            filenames = [
                file[plen:] for file in self.find_data_files(package, src_dir)
                ]
            data.append((package, src_dir, build_dir, filenames))
        return data

    def find_data_files(self, package, src_dir):
        &quot;&quot;&quot;Return filenames for package&#039;s data files in &#039;src_dir&#039;&quot;&quot;&quot;
        globs = (self.package_data.get(&#039;&#039;, [])
                 + self.package_data.get(package, []))
        files = []
        for pattern in globs:
            # Each pattern has to be converted to a platform-specific path
            filelist = glob(os.path.join(src_dir, convert_path(pattern)))
            # Files that match more than one pattern are only added once
            files.extend([fn for fn in filelist if fn not in files
                and os.path.isfile(fn)])
        return files

    def build_package_data(self):
        &quot;&quot;&quot;Copy data files into build directory&quot;&quot;&quot;
        lastdir = None
        for package, src_dir, build_dir, filenames in self.data_files:
            for filename in filenames:
                target = os.path.join(build_dir, filename)
                self.mkpath(os.path.dirname(target))
                self.copy_file(os.path.join(src_dir, filename), target,
                               preserve_mode=False)

    def get_package_dir(self, package):
        &quot;&quot;&quot;Return the directory, relative to the top of the source
           distribution, where package &#039;package&#039; should be found
           (at least according to the &#039;package_dir&#039; option, if any).&quot;&quot;&quot;
        path = package.split(&#039;.&#039;)

        if not self.package_dir:
            if path:
                return os.path.join(*path)
            else:
                return &#039;&#039;
        else:
            tail = []
            while path:
                try:
                    pdir = self.package_dir[&#039;.&#039;.join(path)]
                except KeyError:
                    tail.insert(0, path[-1])
                    del path[-1]
                else:
                    tail.insert(0, pdir)
                    return os.path.join(*tail)
            else:
                # Oops, got all the way through &#039;path&#039; without finding a
                # match in package_dir.  If package_dir defines a directory
                # for the root (nameless) package, then fallback on it;
                # otherwise, we might as well have not consulted
                # package_dir at all, as we just use the directory implied
                # by &#039;tail&#039; (which should be the same as the original value
                # of &#039;path&#039; at this point).
                pdir = self.package_dir.get(&#039;&#039;)
                if pdir is not None:
                    tail.insert(0, pdir)

                if tail:
                    return os.path.join(*tail)
                else:
                    return &#039;&#039;

    def check_package(self, package, package_dir):
        # Empty dir name means current directory, which we can probably
        # assume exists.  Also, os.path.exists and isdir don&#039;t know about
        # my &quot;empty string means current dir&quot; convention, so we have to
        # circumvent them.
        if package_dir != &quot;&quot;:
            if not os.path.exists(package_dir):
                raise DistutilsFileError(
                      &quot;package directory &#039;%s&#039; does not exist&quot; % package_dir)
            if not os.path.isdir(package_dir):
                raise DistutilsFileError(
                       &quot;supposed package directory &#039;%s&#039; exists, &quot;
                       &quot;but is not a directory&quot; % package_dir)

        # Require __init__.py for all but the &quot;root package&quot;
        if package:
            init_py = os.path.join(package_dir, &quot;__init__.py&quot;)
            if os.path.isfile(init_py):
                return init_py
            else:
                log.warn((&quot;package init file &#039;%s&#039; not found &quot; +
                          &quot;(or not a regular file)&quot;), init_py)

        # Either not in a package at all (__init__.py not expected), or
        # __init__.py doesn&#039;t exist -- so don&#039;t return the filename.
        return None

    def check_module(self, module, module_file):
        if not os.path.isfile(module_file):
            log.warn(&quot;file %s (for module %s) not found&quot;, module_file, module)
            return False
        else:
            return True

    def find_package_modules(self, package, package_dir):
        self.check_package(package, package_dir)
        module_files = glob(os.path.join(package_dir, &quot;*.py&quot;))
        modules = []
        setup_script = os.path.abspath(self.distribution.script_name)

        for f in module_files:
            abs_f = os.path.abspath(f)
            if abs_f != setup_script:
                module = os.path.splitext(os.path.basename(f))[0]
                modules.append((package, module, f))
            else:
                self.debug_print(&quot;excluding %s&quot; % setup_script)
        return modules

    def find_modules(self):
        &quot;&quot;&quot;Finds individually-specified Python modules, ie. those listed by
        module name in &#039;self.py_modules&#039;.  Returns a list of tuples (package,
        module_base, filename): &#039;package&#039; is a tuple of the path through
        package-space to the module; &#039;module_base&#039; is the bare (no
        packages, no dots) module name, and &#039;filename&#039; is the path to the
        &quot;.py&quot; file (relative to the distribution root) that implements the
        module.
        &quot;&quot;&quot;
        # Map package names to tuples of useful info about the package:
        #    (package_dir, checked)
        # package_dir - the directory where we&#039;ll find source files for
        #   this package
        # checked - true if we have checked that the package directory
        #   is valid (exists, contains __init__.py, ... ?)
        packages = {}

        # List of (package, module, filename) tuples to return
        modules = []

        # We treat modules-in-packages almost the same as toplevel modules,
        # just the &quot;package&quot; for a toplevel is empty (either an empty
        # string or empty list, depending on context).  Differences:
        #   - don&#039;t check for __init__.py in directory for empty package
        for module in self.py_modules:
            path = module.split(&#039;.&#039;)
            package = &#039;.&#039;.join(path[0:-1])
            module_base = path[-1]

            try:
                (package_dir, checked) = packages[package]
            except KeyError:
                package_dir = self.get_package_dir(package)
                checked = 0

            if not checked:
                init_py = self.check_package(package, package_dir)
                packages[package] = (package_dir, 1)
                if init_py:
                    modules.append((package, &quot;__init__&quot;, init_py))

            # XXX perhaps we should also check for just .pyc files
            # (so greedy closed-source bastards can distribute Python
            # modules too)
            module_file = os.path.join(package_dir, module_base + &quot;.py&quot;)
            if not self.check_module(module, module_file):
                continue

            modules.append((package, module_base, module_file))

        return modules

    def find_all_modules(self):
        &quot;&quot;&quot;Compute the list of all modules that will be built, whether
        they are specified one-module-at-a-time (&#039;self.py_modules&#039;) or
        by whole packages (&#039;self.packages&#039;).  Return a list of tuples
        (package, module, module_file), just like &#039;find_modules()&#039; and
        &#039;find_package_modules()&#039; do.&quot;&quot;&quot;
        modules = []
        if self.py_modules:
            modules.extend(self.find_modules())
        if self.packages:
            for package in self.packages:
                package_dir = self.get_package_dir(package)
                m = self.find_package_modules(package, package_dir)
                modules.extend(m)
        return modules

    def get_source_files(self):
        return [module[-1] for module in self.find_all_modules()]

    def get_module_outfile(self, build_dir, package, module):
        outfile_path = [build_dir] + list(package) + [module + &quot;.py&quot;]
        return os.path.join(*outfile_path)

    def get_outputs(self, include_bytecode=1):
        modules = self.find_all_modules()
        outputs = []
        for (package, module, module_file) in modules:
            package = package.split(&#039;.&#039;)
            filename = self.get_module_outfile(self.build_lib, package, module)
            outputs.append(filename)
            if include_bytecode:
                if self.compile:
                    outputs.append(importlib.util.cache_from_source(
                        filename, optimization=&#039;&#039;))
                if self.optimize &gt; 0:
                    outputs.append(importlib.util.cache_from_source(
                        filename, optimization=self.optimize))

        outputs += [
            os.path.join(build_dir, filename)
            for package, src_dir, build_dir, filenames in self.data_files
            for filename in filenames
            ]

        return outputs

    def build_module(self, module, module_file, package):
        if isinstance(package, str):
            package = package.split(&#039;.&#039;)
        elif not isinstance(package, (list, tuple)):
            raise TypeError(
                  &quot;&#039;package&#039; must be a string (dot-separated), list, or tuple&quot;)

        # Now put the module source file into the &quot;build&quot; area -- this is
        # easy, we just copy it somewhere under self.build_lib (the build
        # directory for Python source).
        outfile = self.get_module_outfile(self.build_lib, package, module)
        dir = os.path.dirname(outfile)
        self.mkpath(dir)
        return self.copy_file(module_file, outfile, preserve_mode=0)

    def build_modules(self):
        modules = self.find_modules()
        for (package, module, module_file) in modules:
            # Now &quot;build&quot; the module -- ie. copy the source file to
            # self.build_lib (the build directory for Python source).
            # (Actually, it gets copied to the directory for this package
            # under self.build_lib.)
            self.build_module(module, module_file, package)

    def build_packages(self):
        for package in self.packages:
            # Get list of (package, module, module_file) tuples based on
            # scanning the package directory.  &#039;package&#039; is only included
            # in the tuple so that &#039;find_modules()&#039; and
            # &#039;find_package_tuples()&#039; have a consistent interface; it&#039;s
            # ignored here (apart from a sanity check).  Also, &#039;module&#039; is
            # the *unqualified* module name (ie. no dots, no package -- we
            # already know its package!), and &#039;module_file&#039; is the path to
            # the .py file, relative to the current directory
            # (ie. including &#039;package_dir&#039;).
            package_dir = self.get_package_dir(package)
            modules = self.find_package_modules(package, package_dir)

            # Now loop over the modules we found, &quot;building&quot; each one (just
            # copy it to self.build_lib).
            for (package_, module, module_file) in modules:
                assert package == package_
                self.build_module(module, module_file, package)

    def byte_compile(self, files):
        if sys.dont_write_bytecode:
            self.warn(&#039;byte-compiling is disabled, skipping.&#039;)
            return

        from distutils.util import byte_compile
        prefix = self.build_lib
        if prefix[-1] != os.sep:
            prefix = prefix + os.sep

        # XXX this code is essentially the same as the &#039;byte_compile()
        # method of the &quot;install_lib&quot; command, except for the determination
        # of the &#039;prefix&#039; string.  Hmmm.
        if self.compile:
            byte_compile(files, optimize=0,
                         force=self.force, prefix=prefix, dry_run=self.dry_run)
        if self.optimize &gt; 0:
            byte_compile(files, optimize=self.optimize,
                         force=self.force, prefix=prefix, dry_run=self.dry_run)

class build_py_2to3(build_py, Mixin2to3):
    def run(self):
        self.updated_files = []

        # Base class code
        if self.py_modules:
            self.build_modules()
        if self.packages:
            self.build_packages()
            self.build_package_data()

        # 2to3
        self.run_2to3(self.updated_files)

        # Remaining base class code
        self.byte_compile(self.get_outputs(include_bytecode=0))

    def build_module(self, module, module_file, package):
        res = build_py.build_module(self, module, module_file, package)
        if res[1]:
            # file was copied
            self.updated_files.append(res[0])
        return res
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