Python 10 or two binary conversion problem with decimals

1 " "2 decimal, binary: Btod3 integer part: A multiplied by 2 of the n-th square (the number of integers after n:a)4 Fractional part: A Times 2 's-N-Square (N:a is a few decimal points)5 decimal --binary Dtob6 Integer part: Short division (except for two-method, reverse output)7 Fractional part: By two rounding method, 0 .... Positive output derived8     9 Parameter n is a string type in a functionTen " " One #decimal in binary A defBtod (n, pre = 4): -S_int =N -S_float ="' theTotal_int, total_float =0, 0 -     if '.' inchN: -S_int, s_float = N.split ('.') -          +Li =Len (s_int) -      forCinchS_int: +Li = li-1 ATotal_int = total_int + int (c) *pow (2, Li) at          -LF =0 -      forCinchs_float: -LF = LF + 1 -Total_float = Total_float +int (c) *pow (2,-LF) -          in     Print("{} conversion to decimal is {:. {} F}". Format (N,total_int +Total_float, pre)) -  to #decimal --Binary + defDtob (n, pre = 4): -Num_int =Int (eval (n)) theNum_float = eval (n)-Num_int *T_int, t_float ="',"' $     if '.' inchN:Panax NotoginsengS_int, s_float = N.split ('.') -  the      whilenum_int!=0: +A = num_int% 2 AT_int = T_int +Str (a) theNum_int = NUM_INT//2 +  -      whileNum_float! =0: $b = num_float*2 $T_float = T_float +str (int (b)) -Num_float = B-Int (b) -   the     #print (t_int[::-1] + '. ' + t_float[:]) -     Print("{} conversion to binary is {:. {} F}". Format (N,eval (t_int[::-1) +'.'+t_float[:]) (pre) )Wuyi  the  -A = input ("Please enter 0 (convert to decimal) or enter 1 (convert to binary):") Wu ifA = ='0': -      whileTrue: Aboutn = input ("Please enter a binary number:") $Flag = 1 -          forCinchN: -             ifc! ='1'  andc! ='0': -                 Print("input Error, please re-enter") AFlag =0 +                  Break the         ifflag: -              Break $Pre = Int (input ("Please enter a few decimals to keep:")) the Btod (N,pre) the elifA = ='1': the      whileTrue: then = input ("Please enter a decimal number:") -Flag = 1 in          forCinchN: the             ifC <='0' orC >='9': the                 Print("input Error, please re-enter") AboutFlag =0 the                  Break the         ifflag: the              Break +Pre = Int (input ("Please enter a few decimals to keep:")) - Dtob (N,pre) the Else:Bayi     Print("Invalid input")

Python 10 or two binary conversion problem with decimals