more python programming for absolute beginner

sequence and define a non-out function for filtering>>> def _not_divisible (n):... return lambda x:x% n > 03. Generating a sequence of prime numbers with filter>>> def prims ():... yield 2... it = _odd_iter () # the first odd sequence 3,5,7,9,11,13... while True:... n = next (IT) # first time with 3 for non-removable function filtering... it = filter (_not_divisible (n), it) # a new odd sequence formed:3,5,7,11,13,17, naturally the second time brought into 5 for non-removable filtering. 4. try

Operators and expressions+,-,*,/, Subtraction%, modulo operation* *, power operationDivisibleOperation Priority: * * > sign (+,-) >//,%>*,/>+,-Modulo operations have some points to note:1, the result symbol depends on the second operand,2, modulo operation formula: r = a% b = a-n * b #其中n是小于a The maximum integer of/bMathematical functions: Simply list a few commonABS () take absolute valuePow (x, y) exponentiation operationRound (X,[n]) rounding opera

　　　　　　　　　　　　　　 numeric operation built-in function functions nbsp; function ABS (num) Returns the absolute value of num Coerce (NUM1, num2) The Converts NUM1 and num2 to the same type and then returns as a tuple. Divmod (NUM1, num2) Division-the combination of the take redundancy operation. Returns a tuple (Num1/nu

,whence=0),The first parameter represents an offset and must be a positive numberIn the official file, the second parameter, whence, can be 0,1,2.0 indicates the beginning of the file start location,1 indicates the current position2 indicates end of fileBut when you use it, you always get an error and you haven't found a solution.The return value is the new location1 #1.txt content: Hello World2With open ('1.txt','R', encoding='Utf-8') as FP:3Fp.seek (5)#position of space after moving to Hello4