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String Manipulation in Python
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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

bookNegative Indexing

Sometimes, we want to move backward, i.e. starting with the very last symbol. Of course, we can count a number of symbols in a string, and then use it for our purposes. But it is a bit irrational, isn't it?

In Python, like for lists or tuples, we can access the very last element by using negative index -1. With negative indexing, enumeration starts with 1 this time, i.e. the very last element has index -1, the last but one -2, and so on...

Note

You can reverse a string by using [::-1]. This indexation means start at the end of string, end at the start (index 0), and move with step -1 (backward).

Task

Given variable course with the string String Manipulation in Python. Your tasks are:

  1. Extract the capital P by using positive indexing.
  2. Extract the capital P by using negative indexing.

Hint: this string has 29 symbols, therefore the very last element has an index of 28.

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Section 1. Chapter 6
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bookNegative Indexing

Sometimes, we want to move backward, i.e. starting with the very last symbol. Of course, we can count a number of symbols in a string, and then use it for our purposes. But it is a bit irrational, isn't it?

In Python, like for lists or tuples, we can access the very last element by using negative index -1. With negative indexing, enumeration starts with 1 this time, i.e. the very last element has index -1, the last but one -2, and so on...

Note

You can reverse a string by using [::-1]. This indexation means start at the end of string, end at the start (index 0), and move with step -1 (backward).

Task

Given variable course with the string String Manipulation in Python. Your tasks are:

  1. Extract the capital P by using positive indexing.
  2. Extract the capital P by using negative indexing.

Hint: this string has 29 symbols, therefore the very last element has an index of 28.

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 1. Chapter 6
toggle bottom row

bookNegative Indexing

Sometimes, we want to move backward, i.e. starting with the very last symbol. Of course, we can count a number of symbols in a string, and then use it for our purposes. But it is a bit irrational, isn't it?

In Python, like for lists or tuples, we can access the very last element by using negative index -1. With negative indexing, enumeration starts with 1 this time, i.e. the very last element has index -1, the last but one -2, and so on...

Note

You can reverse a string by using [::-1]. This indexation means start at the end of string, end at the start (index 0), and move with step -1 (backward).

Task

Given variable course with the string String Manipulation in Python. Your tasks are:

  1. Extract the capital P by using positive indexing.
  2. Extract the capital P by using negative indexing.

Hint: this string has 29 symbols, therefore the very last element has an index of 28.

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!

Sometimes, we want to move backward, i.e. starting with the very last symbol. Of course, we can count a number of symbols in a string, and then use it for our purposes. But it is a bit irrational, isn't it?

In Python, like for lists or tuples, we can access the very last element by using negative index -1. With negative indexing, enumeration starts with 1 this time, i.e. the very last element has index -1, the last but one -2, and so on...

Note

You can reverse a string by using [::-1]. This indexation means start at the end of string, end at the start (index 0), and move with step -1 (backward).

Task

Given variable course with the string String Manipulation in Python. Your tasks are:

  1. Extract the capital P by using positive indexing.
  2. Extract the capital P by using negative indexing.

Hint: this string has 29 symbols, therefore the very last element has an index of 28.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 1. Chapter 6
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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