os.execlpe(file, arg0, arg1, ..., env) os.execv(path, args) os.execve(path, args, env) os.execvp(file, args) os.execvpe(file, args, env) These functions all execute a new program, replacing the current process; they do not return. On Unix, the new executable is loaded into the current process, and will have the same process id as the caller. Errors will be reported as OSError exceptions. The current process is replaced immediately. Open file objects and descriptors are not flushed, so if ther

quantize(exp, rounding=None, context=None) Return a value equal to the first operand after rounding and having the exponent of the second operand. >>> Decimal('1.41421356').quantize(Decimal('1.000')) Decimal('1.414') Unlike other operations, if the length of the coefficient after the quantize operation would be greater than precision, then an InvalidOperation is signaled. This guarantees that, unless there is an error condition, the quantized exponent is always equal to that of the

inspect.iscoroutine(object) Return true if the object is a coroutine created by an async def function. New in version 3.5.

write_byte(byte) Write the integer byte into memory at the current position of the file pointer; the file position is advanced by 1. If the mmap was created with ACCESS_READ, then writing to it will raise a TypeError exception.

class threading.Barrier(parties, action=None, timeout=None) Create a barrier object for parties number of threads. An action, when provided, is a callable to be called by one of the threads when they are released. timeout is the default timeout value if none is specified for the wait() method. wait(timeout=None) Pass the barrier. When all the threads party to the barrier have called this function, they are all released simultaneously. If a timeout is provided, it is used in preference to

itertools.takewhile(predicate, iterable) Make an iterator that returns elements from the iterable as long as the predicate is true. Roughly equivalent to: def takewhile(predicate, iterable): # takewhile(lambda x: x<5, [1,4,6,4,1]) --> 1 4 for x in iterable: if predicate(x): yield x else: break

number_class(context=None) Return a string describing the class of the operand. The returned value is one of the following ten strings. "-Infinity", indicating that the operand is negative infinity. "-Normal", indicating that the operand is a negative normal number. "-Subnormal", indicating that the operand is negative and subnormal. "-Zero", indicating that the operand is a negative zero. "+Zero", indicating that the operand is a positive zero. "+Subnormal", indicating that the operan

find_spec(fullname, path, target=None) An abstract method for finding a spec for the specified module. If this is a top-level import, path will be None. Otherwise, this is a search for a subpackage or module and path will be the value of __path__ from the parent package. If a spec cannot be found, None is returned. When passed in, target is a module object that the finder may use to make a more educated about what spec to return. New in version 3.4.

IMAP4.sort(sort_criteria, charset, search_criterion[, ...]) The sort command is a variant of search with sorting semantics for the results. Returned data contains a space separated list of matching message numbers. Sort has two arguments before the search_criterion argument(s); a parenthesized list of sort_criteria, and the searching charset. Note that unlike search, the searching charset argument is mandatory. There is also a uid sort command which corresponds to sort the way that uid searc

winreg.DeleteKey(key, sub_key) Deletes the specified key. key is an already open key, or one of the predefined HKEY_* constants. sub_key is a string that must be a subkey of the key identified by the key parameter. This value must not be None, and the key may not have subkeys. This method can not delete keys with subkeys. If the method succeeds, the entire key, including all of its values, is removed. If the method fails, an OSError exception is raised. Changed in version 3.3: See above.