Course Outline:
Data Types:
The day starts with data types. There are mainly 4 data types in Python.
- string: string of characters
- integer: whole numbers
- float: floating point numbers
-
boolean: logic [
TRUE,FALSE]
big numbers like 1,000,000 can be writen as 1_000_000, Python interpreter would recognize that.
Type Error, checking and conversion:
To check the data types we can use type()
How to convert between data types?
num = "404" # it's a string
int_num = int(num) # it becomes an int
float_num = float(num) #it becomes a float
Mathematica operations:
Python follows the PEMDAS rule.
- P: Parentheses
- E: Exponents
- M: Multiplication
- D: Division
- A: Addition
- S: Subtraction
Number manipulation and f'strings
to round off any number, round() can be used.
f-strings are formatted strings.
value_pi = 3.141592653589793238
approx_value_pi = round(value_pi, 3) # this is how round off works
# this is how f-strings work
print(f"The approximated value of pi: {approx_value_pi}")
Project: Tip Calculator
Description: A tip calculator which takes the bill value adds the tip and split it into how many folks are there.
My Solution: tip_calculator.py
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