python float()

what is float in python?

float refers to the python built-in function float() which is used to convert a number into a floating point number.

a floating point number is a number that can store a decimal point with subsequent values.

not floating point numbers:

• 10

• 15

• 1

• 525,600 minutes

that last one is how you measure, measure a year. and not a floating point number.

floating point numbers:

• 10.0

• 15.1

• 1.00

• 3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679821480865132823066470938446095505822317253594081284811174502841027019385211055596446229489549303819644288109756659334461284756482337867831652712019091456485669234603486104543266482133936072602491412737245870066063155881748815209209628292540917153643678925903600113305305488204665213841469519415116094330572703657595919530921861173819326117931051185480744623799627495673518857527248912279381830119491298336733624406566430860213949463952247371907021798609437027705392171762931767523846748184676694051320005681271452635608277857713427577896091736371787214684409012249534301465495853710507922796892589235420199561121290219608640344181598136297747713099605187072113499999983729780499510597317328160963185950244594553469083026425223082533446850352619311881710100031378387528865875332083814206171776691473035982534904287554687311595628638823537875937519577818577805321712268066130019278766111959092164201989

that last value is pi (π) to the 1000th place. and also a floating point number.

python float syntax

float(value)

syntax for floating inside of a print statement

print(float(x))

python float() parameters

| Parameters | Description | | --- | --- | | value | you can assign a number or a string as the value that you pass into float(_value_) |

python float examples

1. float number

2. float string

3. bonus: floating values inside of a print() statement with multiple parameters

convert a number into a floating point number:

1. number = 10

float(10)

python would output this as 10.0 - notice how python only adds 1 decimal place for the zero value when floating a round number.

2. number = 10.000

float(10.000)

python would output this as 10,00 - notice how python removes any extra decimal places down to 2 places if the additional integers are zeros.

convert a string into a floating point number

1. string = "10"

float("10")

2, string = "10.00"

float("10.000")

3, string = "10.0343"

float("10.0343")

bonus: floating values inside of a print() statement with multiple parameters

you can float a value inside of a larger statement by wrapping it with float() like we mentioned earlier:

print(float(x))

but what if you had a program that was teaching people about floating point numbers, and you wanted to float the number values inside of a larger statement to print something like: "the floating point number of 10.25000 is 10.25"

print("the floating point number of 10.2500 is: ", float(10.2500))

simply wrap the value you want to float with the float(), and be sure to us a comma , to separate the parameters!

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alright you modest mouse, it's time for you to go forth and get your float() on

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