1.14. Chapter Assessment

Check your understanding

Why create an algorithm?

• Because computers are better at solving problems.
• Computers aren't necessarily better at solving problems, though often they can be quicker than humans. Additionally, algorithms can be used to solve non-computer related problems.
• So that you don't have to solve the problem yourself.
• While it is beneficial to have a set of instructions that others can follow, this isn't the best answer. By creating the algorithm, you solve a problem for yourself and others.
• So that you have a general solution to a problem.
• Yes, by creating a general solution you can then express it as a program if you choose, and then use a computer to automate the execution.
• Because you need a set of instructions to follow.
• While it is beneficial to have a set of instructions as that is what an algorithm **is**, it is not **why** we would want to create one.

Write code to print out the phrase “Hello World”.

===== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertIn("Hello World", self.getOutput(), "Your output should contain a phrase Hello World") myTests().main()

What will be output to the console when the following program is run?

# print("Catch you later!")
print("Good-bye!")
print("Hope you are well.")
print("Hello!")

• nothing, there is an error
• There is no error in this program.
• Catch you later!
• Catch you later! is a comment, as indicated by the # sign, so it won't be printed
• Good-bye! Hope you are well. Hello!
• Yes, the lines are printed in the order the Python interpreter gets to them, top to bottom.
• Hello! Hope you are well. Good-bye!
• While it might make sense to say hello before good-bye, the Python interpreter just follows instructions in order as given
• Hello! Hope you are well. Good-bye! Catch you later!
• No, that is not the order in which Python sees the instructions.

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