statistics.pstdev(data, mu=None) Return the population standard deviation (the square root of the population variance). See pvariance() for arguments and other details. >>> pstdev([1.5, 2.5, 2.5, 2.75, 3.25, 4.75]) 0.986893273527251

ZipFile.comment The comment text associated with the ZIP file. If assigning a comment to a ZipFile instance created with mode 'w', 'x' or 'a', this should be a string no longer than 65535 bytes. Comments longer than this will be truncated in the written archive when close() is called.

Path.iterdir() When the path points to a directory, yield path objects of the directory contents: >>> p = Path('docs') >>> for child in p.iterdir(): child ... PosixPath('docs/conf.py') PosixPath('docs/_templates') PosixPath('docs/make.bat') PosixPath('docs/index.rst') PosixPath('docs/_build') PosixPath('docs/_static') PosixPath('docs/Makefile')

socket.htonl(x) Convert 32-bit positive integers from host to network byte order. On machines where the host byte order is the same as network byte order, this is a no-op; otherwise, it performs a 4-byte swap operation.

name The name of the module the loader can handle.

identify(component, x, y) Returns a description of the specified component under the point given by x and y, or the empty string if no such component is present at that position.

mailcap.getcaps() Returns a dictionary mapping MIME types to a list of mailcap file entries. This dictionary must be passed to the findmatch() function. An entry is stored as a list of dictionaries, but it shouldn’t be necessary to know the details of this representation. The information is derived from all of the mailcap files found on the system. Settings in the user’s mailcap file $HOME/.mailcap will override settings in the system mailcap files /etc/mailcap, /usr/etc/mailcap, and /usr/lo

class numbers.Number The root of the numeric hierarchy. If you just want to check if an argument x is a number, without caring what kind, use isinstance(x, Number).

bytes.index(sub[, start[, end]]) bytearray.index(sub[, start[, end]]) Like find(), but raise ValueError when the subsequence is not found. The subsequence to search for may be any bytes-like object or an integer in the range 0 to 255. Changed in version 3.3: Also accept an integer in the range 0 to 255 as the subsequence.

is_normal(context=None) Return True if the argument is a normal finite number. Return False if the argument is zero, subnormal, infinite or a NaN.