# Occured when accesing an invalid key usually a dictionary

d={2:3}

print(d[0])

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# python keyerror 0 -->because no key 1 present only 2 is there in dictionary

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print(d[1])

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# python keyerror 1 -->because no key 1 present only 2 is there in dictionary

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# Tip use get when accessing unknow dictonary content if we use dict.get(0) we get None as result not an exception

Check if the dataframe ID or indexing is starting from 0 or 1. Change for loop range value accordingly

# no such element 0 in the dictionary