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String Manipulation in Python
course content

Course Content

String Manipulation in Python

String Manipulation in Python

1. Basic Concepts
Creating a StringMultiline StringsAccessing String ElementsString SlicingAdvanced SlicingNegative IndexingUsing IndicesStrings Concatenation
2. String Methods
CountingReplacingTrimmingSplittingSplitting the LinesJoining
3. Strings Formatting
f-strings ConceptionPositional FormattingFormatting with OrderingFormatting by KeysCalculating BMIAdvanced Formatting: PositioningAdvanced Formatting: SignAdvanced Formatting: Float, Round, and PercentCalculating and Formatting Dynamics

bookAdvanced 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.

              
123

            
print("Original number: {0}, formatted number: {0:.2f}".format(255/8))
print("Original number: {0}, formatted number: {0:.2%}".format(15/48))
print("Original number: {0}, formatted number: {0:,.2f}".format(35*6327))
copy
Task
test

Swipe to show code editor

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:

  1. Format the first string so the population and area will be printed in format: 9,147,420, and insert variables in the correct order.
  2. Within the second .format function calculate the population density and format the number in format 28.45.

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Section 3. Chapter 8
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bookAdvanced 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.

              
123

            
print("Original number: {0}, formatted number: {0:.2f}".format(255/8))
print("Original number: {0}, formatted number: {0:.2%}".format(15/48))
print("Original number: {0}, formatted number: {0:,.2f}".format(35*6327))
copy
Task
test

Swipe to show code editor

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:

  1. Format the first string so the population and area will be printed in format: 9,147,420, and insert variables in the correct order.
  2. Within the second .format function calculate the population density and format the number in format 28.45.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 3. Chapter 8
toggle bottom row

bookAdvanced 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.

              
123

            
print("Original number: {0}, formatted number: {0:.2f}".format(255/8))
print("Original number: {0}, formatted number: {0:.2%}".format(15/48))
print("Original number: {0}, formatted number: {0:,.2f}".format(35*6327))
copy
Task
test

Swipe to show code editor

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:

  1. Format the first string so the population and area will be printed in format: 9,147,420, and insert variables in the correct order.
  2. Within the second .format function calculate the population density and format the number in format 28.45.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

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.

              
123

            
print("Original number: {0}, formatted number: {0:.2f}".format(255/8))
print("Original number: {0}, formatted number: {0:.2%}".format(15/48))
print("Original number: {0}, formatted number: {0:,.2f}".format(35*6327))
copy
Task
test

Swipe to show code editor

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:

  1. Format the first string so the population and area will be printed in format: 9,147,420, and insert variables in the correct order.
  2. Within the second .format function calculate the population density and format the number in format 28.45.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 3. Chapter 8
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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