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Google IT Automation with Python Professional Certificate • STUDY MODE

DATA STREAMS

QUESTION 1 OF 9

Which command will print out the exit value of a script that just ran successfully? Great work! Echo will print out the exit value (question mark variable) of a script that just ran successfully.

A
echo $?Correct Answer
B
import sys
C
echo $PATH
D
wc variables.py
QUESTION 2 OF 9

Which command will create a new environment variable? Right on! This command will create a new environment variable, and give it a value.

A
exportCorrect Answer
B
env
C
input
D
wc
QUESTION 3 OF 9

Which I/O stream are we using when we use the input function to accept user input in a Python script? Awesome! STDIN is the standard I/O stream for input.

A
STDOUT
B
STDERR
C
STDINCorrect Answer
D
SYS
QUESTION 4 OF 9

What is the meaning of an exit code of 0? Nice job! An exit value of 0 always indicates the program exited without error.

A
The program ended with an unspecified error.
B
The program ended with a ValueError.
C
The program ended with a TypeError.
D
The program ended successfully.Correct Answer
QUESTION 5 OF 9

Which statements are true about input and raw_input in Python 2? (select all that apply) Excellent! In Python 2, input evaluates the user)s input as an expression. Nice work! raw_input gets a raw string from the user.

A
input performs basic math operations.Correct Answer
B
raw_input performs basic math operations.
C
raw_input gets a string from the user.Correct Answer
D
input gets a string from the user.
QUESTION 6 OF 9

Which line of code from the seconds.py script will convert all integer inputs into seconds? Awesome! This line of code uses a function to convert the number of hours, minutes, and seconds into seconds.

A
int(input("Enter the number of seconds: "))
B
int(input("Enter the number of minutes: "))
C
int(input("Enter the number of hours: "))
D
to_seconds(hours, minutes, seconds)Correct Answer
QUESTION 7 OF 9

Which I/O stream is the output function using when showing an error message? You nailed it! STDERR displays output specifically for error messages.

A
STDIN
B
STDOUT
C
STDERRCorrect Answer
D
PRINT
QUESTION 8 OF 9

Which directory is NOT listed in the PATH variable by default? Right on! This directory is not listed by default.

A
/usr/local/sbin
B
/usr/sbin/tempCorrect Answer
C
/bin
D
/sbin
QUESTION 9 OF 9

Where are the command line arguments stored? Nice job! The list of arguments are stored in the sys module.

A
argv
B
sysCorrect Answer
C
parameters.py
D
print

Ready to test your recall?

Which command will print out the exit value of a script that just ran successfully? Great work! Echo will print out the exit value (question mark variable) of a script that just ran successfully.

A
echo $?
B
import sys
C
echo $PATH
D
wc variables.py

How confident are you in this answer?