substitute(mapping, **kwds) Performs the template substitution, returning a new string. mapping is any dictionary-like object with keys that match the placeholders in the template. Alternatively, you can provide keyword arguments, where the keywords are the placeholders. When both mapping and kwds are given and there are duplicates, the placeholders from kwds take precedence.

class datetime.tzinfo This is an abstract base class, meaning that this class should not be instantiated directly. You need to derive a concrete subclass, and (at least) supply implementations of the standard tzinfo methods needed by the datetime methods you use. The datetime module supplies a simple concrete subclass of tzinfo, timezone, which can represent timezones with fixed offset from UTC such as UTC itself or North American EST and EDT. An instance of (a concrete subclass of) tzinfo c

bytearray.expandtabs(tabsize=8) Return a copy of the sequence where all ASCII tab characters are replaced by one or more ASCII spaces, depending on the current column and the given tab size. Tab positions occur every tabsize bytes (default is 8, giving tab positions at columns 0, 8, 16 and so on). To expand the sequence, the current column is set to zero and the sequence is examined byte by byte. If the byte is an ASCII tab character (b'\t'), one or more space characters are inserted in the

Wave_read.getnframes() Returns number of audio frames.

class.mro() This method can be overridden by a metaclass to customize the method resolution order for its instances. It is called at class instantiation, and its result is stored in __mro__.

sys.winver The version number used to form registry keys on Windows platforms. This is stored as string resource 1000 in the Python DLL. The value is normally the first three characters of version. It is provided in the sys module for informational purposes; modifying this value has no effect on the registry keys used by Python. Availability: Windows.

runfunc(func, *args, **kwds) Call func with the given arguments under control of the Trace object with the current tracing parameters.

os.dup2(fd, fd2, inheritable=True) Duplicate file descriptor fd to fd2, closing the latter first if necessary. The file descriptor fd2 is inheritable by default, or non-inheritable if inheritable is False. Changed in version 3.4: Add the optional inheritable parameter.

is_zero() Return True if the argument is a (positive or negative) zero and False otherwise.

date.month Between 1 and 12 inclusive.