HTTPErrorProcessor.http_response() Process HTTP error responses. For 200 error codes, the response object is returned immediately. For non-200 error codes, this simply passes the job on to the protocol_error_code() handler methods, via OpenerDirector.error(). Eventually, HTTPDefaultErrorHandler will raise an HTTPError if no other handler handles the error.

os.path.ismount(path) Return True if pathname path is a mount point: a point in a file system where a different file system has been mounted. On POSIX, the function checks whether path‘s parent, path/.., is on a different device than path, or whether path/.. and path point to the same i-node on the same device — this should detect mount points for all Unix and POSIX variants. On Windows, a drive letter root and a share UNC are always mount points, and for any other path GetVolumePathName is

pickletools.genops(pickle) Provides an iterator over all of the opcodes in a pickle, returning a sequence of (opcode, arg, pos) triples. opcode is an instance of an OpcodeInfo class; arg is the decoded value, as a Python object, of the opcode’s argument; pos is the position at which this opcode is located. pickle can be a string or a file-like object.

DocTestFailure.example The Example that failed.

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.

tracemalloc.get_object_traceback(obj) Get the traceback where the Python object obj was allocated. Return a Traceback instance, or None if the tracemalloc module is not tracing memory allocations or did not trace the allocation of the object. See also gc.get_referrers() and sys.getsizeof() functions.

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

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.

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

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').