operator.__delitem__(a, b) Remove the value of a at index b.

to_eng_string(context=None) Convert to a string, using engineering notation if an exponent is needed. Engineering notation has an exponent which is a multiple of 3. This can leave up to 3 digits to the left of the decimal place and may require the addition of either one or two trailing zeros. For example, this converts Decimal('123E+1') to Decimal('1.23E+3').

calendar.firstweekday() Returns the current setting for the weekday to start each week.

to_integral_value(rounding=None, context=None) Round to the nearest integer without signaling Inexact or Rounded. If given, applies rounding; otherwise, uses the rounding method in either the supplied context or the current context.

sys.exc_info() This function returns a tuple of three values that give information about the exception that is currently being handled. The information returned is specific both to the current thread and to the current stack frame. If the current stack frame is not handling an exception, the information is taken from the calling stack frame, or its caller, and so on until a stack frame is found that is handling an exception. Here, “handling an exception” is defined as “executing an except cl

string.octdigits The string '01234567'.

setstate(state) Set the state of the encoder to state. state must be a decoder state returned by getstate().

curses.update_lines_cols() Update LINES and COLS. Useful for detecting manual screen resize. New in version 3.5.

class urllib.parse.DefragResultBytes(url, fragment) Concrete class for urldefrag() results containing bytes data. The decode() method returns a DefragResult instance. New in version 3.2.

zipfile.is_zipfile(filename) Returns True if filename is a valid ZIP file based on its magic number, otherwise returns False. filename may be a file or file-like object too. Changed in version 3.1: Support for file and file-like objects.