1a1dfa66218f6c6aabe3048d292a275c672da395,PyInstaller/lib/modulegraph/modulegraph.py,,_code_to_file,#Any#,207

Before Change

def _code_to_file(co):
     Convert code object to a .pyc pseudo-file 
    return BytesIO(
            imp.get_magic() + b"\0\0\0\0" + marshal.dumps(co))

def moduleInfoForPath(path):
    for (ext, readmode, typ) in imp.get_suffixes():

After Change

def _code_to_file(co):
     Convert code object to a .pyc pseudo-file 
    if sys.version_info >= (3, 4):
        header = imp.get_magic() + (b"\0" * 8)
    else:
        header = imp.get_magic() + (b"\0" * 4)
    return BytesIO(header + marshal.dumps(co))

def moduleInfoForPath(path):
    for (ext, readmode, typ) in imp.get_suffixes():

Instances