Modifying a string under a specific condition-CodePudding

In a Python program, I am trying to modify a string under a specific condition:

X = ('4c0')
Sig = ['a', 'b', 'c', 'e']

Sig is a list. Additionally, I have a tuple:

T = (4,'d',5)

If the second element (T[1]) is not in Sig, I must create another string, starting from X:

as T[1] ('d') is not in Sig, T[2] must replace T[0] in X ('5' replacing '4');
the last element in X must be added by 1 ('1' replacing '0').

In this case, the desired result should be:

Y = ('5c1')

I made this code but it is not add any string to Y:

Y = []
for i in TT: # TT has the tuple T
    i = list(i)
    if i[1] not in Sig:
        for j in TT:
            if type(j[2]) == str:
                if i[1] == j[1]:
                    Y.append(j[2][0] i[1] str(int(j[2][2] 1)))

Any ideas how I could solve this problem?

CodePudding user response：

You need to be more clear as to what the conditions are if this is a one-time requirement you can use -

i = 1
if T[i] not in sig:

  Y=list(X) # converting the string to a list in order to perform operations

  Y[i-1] = T[i 1] # operation 1 [replace element at position -1 as compared to Tuple element position check]

  Y[-1] = int(Y[-1]) 1 # operation 2 [add 1 to the last element]

print(''.join(map(str, Y)))

'5c1'

CodePudding user response：

There are a lot of missing conditions in your problem statement (e.g. what to do if 'd' was in Sig, How to handle values past 9, what if X[0] is not the same as T[0], what if X[2] is equal to T[2])

For the example given a simple string format should suffice:

X   = ('4c0')
Sig = ['a', 'b', 'c', 'e']
T   = (4,'d',5)

if T[1] not in Sig:
    Y = f"{T[2]}{X[1]}{int(X[2]) 1}"

print(Y) # 5c1