I chose line 3 because if it does blow up or not, line 4 will get executed since fahr is a floating point number and the calculation in line 4 can be done. I don’t know why the correct answer is lines 3&4.
Thanks,
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If line three fails, then there is no fahr variable defined for line four
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Well, it depends on what you put under “except”. If you create the variable fahr within the “except”, when computing the calculation, fahr is defined. But of course, that would give a incorrect value of cel.
An alternative way would be to also include also the print(cel) statement so we only execute it only if it runs smoothly. In the case there is an exception, we only display a friendly error message.
Note: Experts, please confirm that my suggestion is a good practice. Thank you!
Blockquote
temp = “5 degrees”
cel = 0
try:
fahr = float(temp)
cel = (fahr - 32.0) * 5.0 / 9.0
print(cel)
except:
print (“There is an error. Please enter a number next time”)
Blockquote
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