[Python] Pyyhon f-string having Syntax error for literal ':' in between [closed]

I am facing an error while executing 2nd object created by eval(). I'm getting an error of invalid syntax for ':' while printing the 2nd object - timer_repr_object. Code execution result printout:

1st Timer- 23:59: 59

2nd Timer- 00:00: 00

Traceback (most recent call last):
File "c:\Users\kanch\OneDrive\Documents\python\workspace\python1st\DisplayClock24hour.py", line 54, in <module>
timer_repr = eval(repr(timer))

File "<string>", line 1

**Timer- 23:59: 59 (error in 1st ':')**


SyntaxError: invalid syntax


Below is the code.

def two_digits(val):
s = str(val)
if len(s) == 1:
s = '0' + s
return s

class Timer:
def __init__(self, hours=0, minutes=0, seconds=0):
self.__hours = hours
self.__minutes = minutes
self.__seconds = seconds

def __repr__(self):
return f'Timer- {two_digits(self.__hours)}:{two_digits(self.__minutes)}: {two_digits(self.__seconds)}'

def next_second(self):
self.__seconds += 1
if self.__seconds > 59:
self.__seconds = 0
self.__minutes += 1
if self.__minutes > 59:
self.__minutes = 0
self.__hours += 1
if self.__hours > 23:
self.__hours = 0

def prev_second(self):
self.__seconds -= 1
if self.__seconds < 0:
self.__seconds = 59
self.__minutes -= 1
if self.__minutes < 0:
self.__minutes = 59
self.__hours -= 1
if self.__hours < 0:
self.__hours = 23

timer = Timer(23, 59, 59)
print('1st ', timer, end ='\n')
timer.next_second()
print('2nd ', timer , end='\n')
timer.prev_second()
timer_repr_object = eval(repr(timer))
print('3rd ')
print(timer_repr_object)

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