Types, expressions, and variables

Question 1

write comments in Python

Answer 1

To write comments in Python, use the number symbol # before writing your comment. When you run your code, Python will ignore everything past the # on a given line.

Question 2

int. float. str.

Answer 2

ou can get Python to tell you the type of an expression by using the built-in type() function. You’ll notice that Python refers to integers as int, floats as float, and character strings as str.

Question 3

convert int. to float.

Answer 3

Let’s cast integer 2 to float:

float (2)
​
float(2)
2.0

Question 4

convert string to int.

Answer 4

Sometimes, we can have a string that contains a number within it. If this is the case, we can cast that string that represents a number into an integer using int():

int (‘1’)
​
int(‘1’)
1

Question 5

Convert numbers to string

Answer 5

If we can convert strings to numbers, it is only natural to assume that we can convert numbers to strings, right?

str (1)
​
str(1)
​
'1'

Question 6

Boolean

Answer 6

bool (1)

bool(1)
bool (1)
​
bool(1)
True