Find the output of the following Python code. Assume the file students.csv contains the following data:…

Question

Find the output of the following Python code. Assume the file students.csv contains the following data:

Roll,Name,Score
1,Amit,85
2,Sumit,92

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import csv

def AnalyzeCSV():
with open('students.csv', 'r') as F:
Reader = csv.DictReader(F)
R1 = next(Reader)
# Accessing data
V1 = R1[0]; V2 = R1[2]
# Checking types and headers
print(V1)
print(type(V2).__name__)
print(Reader.fieldnames[0])
print(len(R1))

AnalyzeCSV()

Accepted Answer

csv.DictReader() reads each row as a dictionary, where keys are column headers: Roll, Name, Score. R1 = next(Reader) ⇒ {'Roll':'1','Name':'Amit','Score':'85'} Dictionary does not support index-based access, so R1[0] and R1[2] cause KeyError: 0. Due to this error, program execution stops and no print statements execute. All CSV values are read as string (str) type by default. Actual Output: KeyError: 0 (no output printed) Expected Output (If correct keys were used): If the code used R1['Roll'] and R1['Score'] instead of indices, the output would be: 1 (The value of Roll) str (The __name__ of the data type for Score) Roll (The first element in Reader.fieldnames) 3 (Total number of fields/keys in R1)

Find the output of the following Python code. Assume the file students.csv…