setup.py 文件源码

def setup_python3():
    # Taken from "distribute" setup.py
    from distutils.filelist import FileList
    from distutils import dir_util, file_util, util, log
    from os.path import join, exists

    tmp_src = join("build", "src")
    # Not covered by "setup.py clean --all", so explicit deletion required.
    if exists(tmp_src):
        dir_util.remove_tree(tmp_src)
    # log.set_verbosity(1)
    fl = FileList()
    for line in open("MANIFEST.in"):
        if not line.strip():
            continue
        fl.process_template_line(line)
    dir_util.create_tree(tmp_src, fl.files)
    outfiles_2to3 = []
    for f in fl.files:
        outf, copied = file_util.copy_file(f, join(tmp_src, f), update=1)
        if copied and outf.endswith(".py"):
            outfiles_2to3.append(outf)

    util.run_2to3(outfiles_2to3)

    # arrange setup to use the copy
    sys.path.insert(0, tmp_src)

    return tmp_src