Python self-bringing function

Callable ()#whether it can be executed, whether it can be calledChr ()#returns the ASCII character corresponding to the integer i. Contrary to the Ord () effect. Parameter x: A positive number between the range of values [0, 255]. Ord ()#The parameter is an ASCII character, and the return value is the corresponding decimal integerRandom.randrange (1,5)#randomly generate a numberR = Compile (s,"<string>","exec")#to compile a string into Python codeexec(r)#execution code, a receive code (compiled), a receive string (You can build it yourself and then execute it). No return valueEval ()#You can only execute an expression with a return value. Dir ()#quickly get what features an object providesHelp ()#View feature DetailsDivmod ()#Division, taking the remainderIsinstance ()#determine if an object is an instance of a classFilter ()#Loop The second argument so that each loop element executes the function if the function return value is true, added to the result list. If False, the operation is not done. Hex ()#Ten---> 16 binaryFilter ()#Loop The second argument so that each loop element executes the function if the function return value is true, added to the result list. If False, the operation is not done. Print(ABS (-1))#take absolute valuePrint(bool ([]))#0,none, "", [], () are null valuesn = All ([1,2,3,none])#All is true, only is trueN1=any ([[],"", 1])#As long as one is true, it is true.#string conversion byte type#bytes (as long as the converted string, according to what code)st="Understanding" #One byte 8 bits, one kanji three bytesN=bytes (st,encoding="Utf-8")Print(n) N2= Bytes (st,encoding="GBK")Print(n2)#bytes into a stringNEW_STR = STR (n, encoding="Utf-8") New=n.decode ("Utf-8")Print(new)Print(NEW_STR)


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Python self-bringing function