Advanced Formatting: Float, Round, and Percent
Within a simple {} block, we can round a float number with the necessary precision, or represent a number as a percent.
Let's consider the pattern we will use in this chapter:
{:[thousands separator].[number][type]}
Please note, that like in the previous chapters, we don't need to place square brackets (I placed it for convenience).
[thousands separator]- the symbol used to separate every thousand (possible values are,and_).[number]- is the precision, number of decimal places (used for rounding number).[type]- type of number representing (e- scientific notation,%- percentage (will multiply number by 100),g- general format,f- fixed-point notation). You can dive deeper into possible options in Python documentation.
Task
As of 2020, the population of the USA was 331002651. The total land area is 9147420 sq.km. Population density is the population-to-area ratio. Your tasks are:
- Format the first string so the population and area will be printed in format:
9,147,420, and insert variables in the correct order. - Within the second
.formatfunction calculate the population density and format the number in format28.45.
Everything was clear?
Course Content
String Manipulation in Python
String Manipulation in Python
Advanced Formatting: Float, Round, and Percent
Within a simple {} block, we can round a float number with the necessary precision, or represent a number as a percent.
Let's consider the pattern we will use in this chapter:
{:[thousands separator].[number][type]}
Please note, that like in the previous chapters, we don't need to place square brackets (I placed it for convenience).
[thousands separator]- the symbol used to separate every thousand (possible values are,and_).[number]- is the precision, number of decimal places (used for rounding number).[type]- type of number representing (e- scientific notation,%- percentage (will multiply number by 100),g- general format,f- fixed-point notation). You can dive deeper into possible options in Python documentation.
Task
As of 2020, the population of the USA was 331002651. The total land area is 9147420 sq.km. Population density is the population-to-area ratio. Your tasks are:
- Format the first string so the population and area will be printed in format:
9,147,420, and insert variables in the correct order. - Within the second
.formatfunction calculate the population density and format the number in format28.45.
Everything was clear?
