Hello,

Right now I am trying to learn programming. So far I have not been successful in completing any task. For time calculator project this is my code:

```
def add_time(start, duration):
timevar =[]
duvar =[]
timevar = start.replace(" ",":").split(":")
duvar = duration.split(":")
#convert PM to 24 hour
if timevar[2] == "PM":
convar = int(timevar[0]) + 12
else: convar = int(timevar[0])
#calculate minute and convert minute
Total_minute = int(timevar[1]) + int(duvar[1])
if Total_minute >60 :
Extra_hour = 1
Total_minute = Total_minute - 60
else: Extra_hour = 0
# calculate hour and convert hour
Total_hour = convar + int(duvar[0]) + int(Extra_hour)
n_day = float((Total_hour/24) - 1)
if n_day <0 : p_day=" "
elif n_day >0 and n_day <1 : p_day= "(next day)"
else: p_day = f"({int(n_day)+1} days later)"
restime = Total_hour % 24
if restime >0.5 : ampm = "PM"
else: ampm = "AM"
if Total_hour > 24:
con_hour = Total_hour - ((int(n_day)+1)*24)
else: con_hour = Total_hour
if con_hour > 12:
Print_hour = con_hour - 12
else: Print_hour = con_hour
print (f"{Print_hour}:{Total_minute:02d} {ampm} {p_day}")
```

and when I run the program this is my result

1:08 PM (next day)

None

3:07 PM

F6:18 PM (20 days later)

FE2:45 PM (next day)

F5:01 PM

F12:05 PM

F5:42 PM

FE2:59 PM (next day)

FE0:04 AM (2 days later)

FE

plus 8 failures and 4 errors.

While I suspect that 8 failures is more of a wrong calculation on my side, I am curious on why my 2nd line result in none and there are F or FE in front of my answers from line 3 and afterwards. Any suggestion or guidance would be appreciated. Thank you in advance.