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Python Institute PCED - Certified Entry-Level Data Analyst with Python Sample Questions:

1. You are writing a function named process_data()to read and process numerical input from a file. The function must:
- read the file data.txt,
- attempt to convert the first line into an integer,
- handle file, conversion, or index-related exceptions,
- print the value only if no error occurs,
- and always print a final message after execution.
Which implementation correctly and robustly meets all these conditions? Select the best answer.

A)

B)

C)

2. Which of the following statements about Python functions are correct? (Choose two.)

A) Default parameters must always come before required ones in the parameter list.
B) A function cannot call itself or be passed as an argument to itself.
C) passexecutes the function body and returns its result.
D) If a function does not contain a returnstatement, it returns Noneby default.
E) Functions can only return numeric values or strings.
F) Positional arguments must be passed in the order defined, while keyword arguments can be passed in any order using their parameter names.

3. A student writes a program using input() to collect user data, then tries to add 5 to the input value without conversion. The program crashes. What is the most likely cause of this behavior?

A) Syntax error
B) input returns int
C) input returns float
D) input returns string

4. A list is defined as [1, 2, 3]. The programmer uses the method .append([4, 5]). What will the resulting list look like after execution?

A) [1,2,3,4,5]
B) Error
C) [4,5,1,2,3]
D) [1,2,3,[4,5]]

5. A dictionary is defined as d = {"a":1, "b":2}. The programmer accesses d["c"]. What happens when this line executes?

A) Returns 0
B) Raises KeyError
C) Adds key automatically
D) Returns None

Solutions: