linecache.getline(filename, lineno, module_globals=None) Get line lineno from file named filename. This function will never raise an exception — it will return '' on errors (the terminating newline character will be included for lines that are found). If a file named filename is not found, the function will look for it in the module search path, sys.path, after first checking for a PEP 302 __loader__ in module_globals, in case the module was imported from a zipfile or other non-filesystem im

linecache.clearcache() Clear the cache. Use this function if you no longer need lines from files previously read using getline().

linecache.checkcache(filename=None) Check the cache for validity. Use this function if files in the cache may have changed on disk, and you require the updated version. If filename is omitted, it will check all the entries in the cache.

license credits Objects that when printed, print a message like “Type license() to see the full license text”, and when called, display the corresponding text in a pager-like fashion (one screen at a time).

len(s) Return the length (the number of items) of an object. The argument may be a sequence (such as a string, bytes, tuple, list, or range) or a collection (such as a dictionary, set, or frozen set).

keyword.kwlist Sequence containing all the keywords defined for the interpreter. If any keywords are defined to only be active when particular __future__ statements are in effect, these will be included as well.

keyword.iskeyword(s) Return true if s is a Python keyword.

exception KeyError Raised when a mapping (dictionary) key is not found in the set of existing keys.

exception KeyboardInterrupt Raised when the user hits the interrupt key (normally Control-C or Delete). During execution, a check for interrupts is made regularly. The exception inherits from BaseException so as to not be accidentally caught by code that catches Exception and thus prevent the interpreter from exiting.

json.loads(s, encoding=None, cls=None, object_hook=None, parse_float=None, parse_int=None, parse_constant=None, object_pairs_hook=None, **kw) Deserialize s (a str instance containing a JSON document) to a Python object using this conversion table. The other arguments have the same meaning as in load(), except encoding which is ignored and deprecated. If the data being deserialized is not a valid JSON document, a JSONDecodeError will be raised.