Learning Outcomes –Lesson 4

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Presentation transcript:

Learning Outcomes –Lesson 4 Combine maths and text Use the Python interpreter as a calculator Explain what is meant by the term integer

Paste this table into your books

Paste the table into your book [ slide 5 ] Maths in Python Paste the table into your book Key words – write these into your book leave room to write a definition mathematical operator modulus integer float

Open the Python Shell ( Interactive mode) then open a "New window" (script mode) type in the following calculations: Save the script as "simple_calculation.py" then run it (F5) If you done things correctly you should see the answers to the calculations in the shell. Check with the image below.

Maths in Python Race a friend with a calculator to see whether Python is faster than a calculator: 5 * 6.5 = 7 / 3 = 128 + 6 = How many times does 120 divide by 7? What is the remainder of 120 / 7?

Combining Maths and Text [ slide 7 ] Combining Maths and Text The print() function will print to screen: strings, numbers or calculations separated by commas: Interactive session: What will the output from this code produce? >>> print("11 divided by 4 = ", 11//4, "remainder ", 11%4) 11 divided by 4 = 2 remainder 3 Now try entering this code: >>> print("111 divided by 4 = ", 111/4) 111 divided by 4 = 27.75 >>> print("11 divided by 4 = ", 11/4) 11 divided by 4 = 2.75 >>> print("I will not write code in history lessons.\n" *50) See what else you can produce.

Using the Python interpreter as a calculator Go back to the IDLE screen What is 156 add 567? What is 132 subtract 46? What is 256 divided by 8? What is 389 multiplied by 13? Can you work out what mathematical symbols need to be used?

What works? Both of these work

The answers – use brackets!

Why don’t these work? >>> what is 2 add 2? >>> 3 times 6 >>> 24 subtract 3 >>> How many times will 4 fit into 12?

Integers In computing, whole numbers (without decimals) are referred to as integers, this means that while 4.0 is not considered an integer, 4 is. It is possible to store integers into variables.

Integers stored into variables

Evaluating expressions

Learning Outcomes Lesson 4 Combine maths and text Use the Python interpreter as a calculator Explain what is meant by the term integer