>>> dic = dict((("A",[1,2,3]),("F",56))) >>> dic {'A': [1, 2, 3], 'F': 56} >>> dic = {"R":"RRRR","T":"TTTT"} >>> dic {'R': 'RRRR', 'T': 'TTTT'} >>> dic["R"] 'RRRR' >>> >>> dic = dict((("A",[1,2,3]),("F",56))) >>> dic["A"] [1, 2, 3] >>> dic["A"][0] 1 >>> dic["E"] = "RYFHF" >>> dic {'A': [1, 2, 3], 'F': 56, 'E': 'RYFHF'} >>> dict1 = {} >>> dict1.formkeys((1,2,3),"number") Traceback (most recent call last): File "<pyshell#13>", line 1, in <module> dict1.formkeys((1,2,3),"number") AttributeError: 'dict' object has no attribute 'formkeys' >>> dict1 = dict1.formkeys((1,2,3),"number") Traceback (most recent call last): File "<pyshell#14>", line 1, in <module> dict1 = dict1.formkeys((1,2,3),"number") AttributeError: 'dict' object has no attribute 'formkeys' >>> dict1 = {"A":"a","B":"b"} >>> d = dict1.keys >>> d <built-in method keys of dict object at 0x1057d1cf0> >>> for i in d : print(i) Traceback (most recent call last): File "<pyshell#20>", line 1, in <module> for i in d : TypeError: 'builtin_function_or_method' object is not iterable >>> dict1.get("A") 'a' >>> dict1.set("C","c") Traceback (most recent call last): File "<pyshell#22>", line 1, in <module> dict1.set("C","c") AttributeError: 'dict' object has no attribute 'set' >>> dict1.get("C","c") 'c' >>> dict1 {'A': 'a', 'B': 'b'} >>> "A" in dict1 True >>> dict1 {'A': 'a', 'B': 'b'} >>> dict1.clear() >>> dict1 {} >>> a = {"x":"XXXX","e":"EEEEEE"} >>> b= a >>> a = {} >>> a {} >>> b {'x': 'XXXX', 'e': 'EEEEEE'} >>> b["t"] = "TTTT" >>> b {'x': 'XXXX', 'e': 'EEEEEE', 't': 'TTTT'} >>> for i in b.keys SyntaxError: invalid syntax >>> or i in b.keys: SyntaxError: invalid syntax >>> for i in b.keys: print(i) Traceback (most recent call last): File "<pyshell#41>", line 1, in <module> for i in b.keys: TypeError: 'builtin_function_or_method' object is not iterable >>> for i in b.items(): print(i) ('x', 'XXXX') ('e', 'EEEEEE') ('t', 'TTTT') >>> for i in b.keys(): print(i) x e t >>> for i in b.values(): print(i) XXXX EEEEEE TTTT >>> for i in b.items(): if i["x"] == "XXXX": print(i) Traceback (most recent call last): File "<pyshell#54>", line 2, in <module> if i["x"] == "XXXX": TypeError: tuple indices must be integers or slices, not str >>> for i in b.items(): if i["x"] == "XXXX": print("i") Traceback (most recent call last): File "<pyshell#56>", line 2, in <module> if i["x"] == "XXXX": TypeError: tuple indices must be integers or slices, not str >>> b {'x': 'XXXX', 'e': 'EEEEEE', 't': 'TTTT'} >>> b.get("x") 'XXXX' >>> b.get("d","DDDD") 'DDDD' >>> b {'x': 'XXXX', 'e': 'EEEEEE', 't': 'TTTT'} >>> b.set("d","DDDD") Traceback (most recent call last): File "<pyshell#61>", line 1, in <module> b.set("d","DDDD") AttributeError: 'dict' object has no attribute 'set' >>> help(b) Help on dict object: class dict(object) | dict() -> new empty dictionary | dict(mapping) -> new dictionary initialized from a mapping object's | (key, value) pairs | dict(iterable) -> new dictionary initialized as if via: | d = {} | for k, v in iterable: | d[k] = v | dict(**kwargs) -> new dictionary initialized with the name=value pairs | in the keyword argument list. For example: dict(one=1, two=2) | | Methods defined here: | | __contains__(self, key, /) | True if D has a key k, else False. | | __delitem__(self, key, /) | Delete self[key]. | | __eq__(self, value, /) | Return self==value. | | __ge__(self, value, /) | Return self>=value. | | __getattribute__(self, name, /) | Return getattr(self, name). | | __getitem__(...) | x.__getitem__(y) <==> x[y] | | __gt__(self, value, /) | Return self>value. | | __init__(self, /, *args, **kwargs) | Initialize self. See help(type(self)) for accurate signature. | | __iter__(self, /) | Implement iter(self). | | __le__(self, value, /) | Return self<=value. | | __len__(self, /) | Return len(self). | | __lt__(self, value, /) | Return self<value. | | __ne__(self, value, /) | Return self!=value. | | __new__(*args, **kwargs) from builtins.type | Create and return a new object. See help(type) for accurate signature. | | __repr__(self, /) | Return repr(self). | | __setitem__(self, key, value, /) | Set self[key] to value. | | __sizeof__(...) | D.__sizeof__() -> size of D in memory, in bytes | | clear(...) | D.clear() -> None. Remove all items from D. | | copy(...) | D.copy() -> a shallow copy of D | | fromkeys(iterable, value=None, /) from builtins.type | Returns a new dict with keys from iterable and values equal to value. | | get(...) | D.get(k[,d]) -> D[k] if k in D, else d. d defaults to None. | | items(...) | D.items() -> a set-like object providing a view on D's items | | keys(...) | D.keys() -> a set-like object providing a view on D's keys | | pop(...) | D.pop(k[,d]) -> v, remove specified key and return the corresponding value. | If key is not found, d is returned if given, otherwise KeyError is raised | | popitem(...) | D.popitem() -> (k, v), remove and return some (key, value) pair as a | 2-tuple; but raise KeyError if D is empty. | | setdefault(...) | D.setdefault(k[,d]) -> D.get(k,d), also set D[k]=d if k not in D | | update(...) | D.update([E, ]**F) -> None. Update D from dict/iterable E and F. | If E is present and has a .keys() method, then does: for k in E: D[k] = E[k] | If E is present and lacks a .keys() method, then does: for k, v in E: D[k] = v | In either case, this is followed by: for k in F: D[k] = F[k] | | values(...) | D.values() -> an object providing a view on D's values | | ---------------------------------------------------------------------- | Data and other attributes defined here: | | __hash__ = None >>> b {'x': 'XXXX', 'e': 'EEEEEE', 't': 'TTTT'} >>> setitem(b,"d","DDD") Traceback (most recent call last): File "<pyshell#64>", line 1, in <module> setitem(b,"d","DDD") NameError: name 'setitem' is not defined >>> for i in b.keys(): if i in b: print(i) break x >>> for i in b.keys(): if i in b: print(i) x e t >>> b["y"] = "RRRRR" >>> b {'x': 'XXXX', 'e': 'EEEEEE', 't': 'TTTT', 'y': 'RRRRR'} >>> a = b.copy() >>> a {'x': 'XXXX', 'e': 'EEEEEE', 't': 'TTTT', 'y': 'RRRRR'} >>> b.clear() >>> b {} >>> a {'x': 'XXXX', 'e': 'EEEEEE', 't': 'TTTT', 'y': 'RRRRR'} >>> id(a) 4387105744 >>> id(b) 4386400656 >>> a.popitem() ('y', 'RRRRR') >>> a {'x': 'XXXX', 'e': 'EEEEEE', 't': 'TTTT'} >>> a.setdifault("b","BBBB") Traceback (most recent call last): File "<pyshell#83>", line 1, in <module> a.setdifault("b","BBBB") AttributeError: 'dict' object has no attribute 'setdifault' >>> a {'x': 'XXXX', 'e': 'EEEEEE', 't': 'TTTT'} >>> a.setdefault("v","VVVV") 'VVVV' >>> a {'x': 'XXXX', 'e': 'EEEEEE', 't': 'TTTT', 'v': 'VVVV'} >>> a.get("e") 'EEEEEE' >>> a {'x': 'XXXX', 'e': 'EEEEEE', 't': 'TTTT', 'v': 'VVVV'} >>> a.setdefault("n","NNNNN") 'NNNNN' >>> a {'x': 'XXXX', 'e': 'EEEEEE', 't': 'TTTT', 'v': 'VVVV', 'n': 'NNNNN'} >>> a.updata("g","GGGG") Traceback (most recent call last): File "<pyshell#91>", line 1, in <module> a.updata("g","GGGG") AttributeError: 'dict' object has no attribute 'updata' >>> a {'x': 'XXXX', 'e': 'EEEEEE', 't': 'TTTT', 'v': 'VVVV', 'n': 'NNNNN'} >>> a.update("e","update") Traceback (most recent call last): File "<pyshell#93>", line 1, in <module> a.update("e","update") TypeError: update expected at most 1 arguments, got 2 >>> a {'x': 'XXXX', 'e': 'EEEEEE', 't': 'TTTT', 'v': 'VVVV', 'n': 'NNNNN'} a >>> a.update({"e","update"}) Traceback (most recent call last): File "<pyshell#95>", line 1, in <module> a.update({"e","update"}) ValueError: dictionary update sequence element #0 has length 1; 2 is required >>> a.update({"e":"update"}) >>> a {'x': 'XXXX', 'e': 'update', 't': 'TTTT', 'v': 'VVVV', 'n': 'NNNNN'} >>> a.update("e":"update2") SyntaxError: invalid syntax >>> a.update({"e":"update2"}) >>> a {'x': 'XXXX', 'e': 'update2', 't': 'TTTT', 'v': 'VVVV', 'n': 'NNNNN'} >>> a.setdefault("e","rrrr") 'update2' >>> a {'x': 'XXXX', 'e': 'update2', 't': 'TTTT', 'v': 'VVVV', 'n': 'NNNNN'} >>> a.setdefault("e1","XXXX") 'XXXX' >>> a {'x': 'XXXX', 'e': 'update2', 't': 'TTTT', 'v': 'VVVV', 'n': 'NNNNN', 'e1': 'XXXX'} >>>