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What is escape sequence?

The sequence of character which has indirect meaning when it placed within double quotes.

Nội dung chính

    What is escape sequence?
    Useful Escape Sequences
    Topics You Might Like
    Types of Escape Sequence
    Example Usage of Various Escape Characters
    What Does “t” Do in Python?
    When to use “t” in Python?
    Application of built-in function Chr () and Ord ()
    What is an escape character give an example?
    What is escape sequence in Python with example?
    What is escape character?
    Does Python have escape characters?

It will optimize some the repetitive tasks while programming.

Example

While printing some statement, if you want to give horizontal tab (usually four spaces) in between every word like below,

Example

#escape sequence example

print(“Happy New Year”)

Here, we manually gave four space between each word. This can be achieved

easily with t escape sequence.

Like below,

Example

#escape sequence in python

print(“HappytNewtYear”)

Useful Escape Sequences

Escape sequenceDescriptionExampleOutputn

New line

print(“HellonWorld”)

Hello
World

t

Horizontal tab

print(“HellotWorld”)

Hello    World

Single quote

print(“Hello ‘World’ “)

Hello ‘World’

Double quote

print(“Hello “World” “)

Hello “World”

Backslash

print(“Hello World”)

Hello World

Topics You Might Like

Escape characters or sequences are illegal characters for Python and never get printed as part of the output. When backslash is used in Python programming, it allows the program to escape the next characters.

Following would be the syntax for an escape sequence

Syntax:

Escape character

Explanation:

Here, the escape character could be t, n, e, or backslash itself.

Types of Escape Sequence

Escape

characters can be classified as non-printable characters when backslash precedes them. The print statements do not print escape characters.

Here is a list of Escape Characters

CodeDescription’

Single quotation

Backslash

n

New Line

r

Carriage return

t

Tab

b

Backspace

f

Form feed

ooo

Octal equivalent

xhhh

Hexadecimal equivalent

Example Usage of Various Escape Characters

Escape characterFunctionExample CodeResultn

The new line character helps the programmer to insert a new line before or after a string.

txt = “Gurun99!”

print(txt)

Guru99

This escape sequence allows the programmer to insert a backslash into the Python output.

txt = “Guru99!”

print(txt)

Guru99!

xhh

Use a backslash followed by a hexadecimal number.
This is done by printing in backslash with the hexadecimal equivalent in double quotes.

txt = “x47x75x72x75” + “99!”

print(txt)

Guru99!

ooo

To get the integer value of an octal value, provide a backslash followed by ooo or octal number in double-quotes.
It is done by printing in a backslash with three octal equivalents in double quotes.

txt = ‘107125122125’+ “99!”

print(txt)

GURU99!

b

This escape sequence provides backspace to the Python string. It is inserted by adding a backslash followed by “b”.
“b” here represents backslash.

txt = “Gurub99!”

print(txt)

Guru99!

f

It helps in the interpolation of literal strings

txt = “Guruf99!”

print(txt)

Guru99!

r

It helps you to create a raw string

txt = “Gurur99!”

print(txt)

Guru99!

It helps you to add a single quotation to string

txt = “Guru’99!”

print(txt)

Guru’99!

What Does “t” Do in Python?

The t alphabet in Python represents a space. It enables you to insert space or tab between strings in a code. It helps us to have space in the Python program when there is a need for it. To eliminate the usage of keyboard space, the coders utilize tab escape sequences.

Following is the syntax for a tab escape sequence.

Syntax:

“t”

Example:

In this example, the string

used is “Guru99”. The program will put a tab or a space between Guru and 99.

Python Code:

TextExample=”Gurut99″

print (TextExample)

Output:

Guru 99

Explanation:

In the above example, instead of adding space using a keyboard, the program helps us by putting a space or a tab between the string “Guru99”. It also provides a space the precise location where the escape sequence is added.

When to use “t” in Python?

The escape sequence tab is

utilized to put a horizontal tab between words and hence helps manipulate python strings. However, If the escape sequence tab is not used, the programmer has to manually add a space between every word of the string.

You can transform it into a time-consuming exercise. Moreover, the space added between different keywords may or may not be precise in its placement.

Here is an example that displays the manual addition of a space between words and the use of an escape sequence between

words.

Python Code:

print(“Manually Added space in string Guru 99″)

TextExample=”UsetofttabttotaddtspacetGurut99”

print(TextExample)

Output:

Manually Added space in string Guru 99

Use of tab to add space Guru 99

Explanation:

The programmer manually added space between words in the above code, so the placement was not precise. When the escape sequence tab was applied, the program automatically provided the precise location of space between words.

Application of built-in function Chr () and Ord ()

The Chr () function is a built function that takes a single argument as input.

The function takes Unicode characters as an input which ranges from 0 to 1,114 and 111, respectively. The function can be used as the substitute for escape sequence “t” to put a space between two words.

The syntax for the Chr function is represented below: –

Syntax: –

Chr(Unicode character)

The tab has the Unicode character 9. Use the following Python command to arrive the Unicode character as shown below: –

Python Code:

print(“Unicode character of the tab is”)

Ord=ord(‘t’)

print(Ord)

Output:

Unicode character of the tab is

9

Explanation:

The above code provides the Unicode character for the tab. It can be used as an input for the Chr function. Use of Chr (9) would allow us to create a substitute for a tab escape sequence.

This code is an example of how to use Chr (9), as shown below:

Python Code:

TextExample=”Guru+chr(9)+99″

print(TextExample)

Output:

Guru 99

The above function, however, is deprecated for version 3 and above.

Summary:

What is an escape character give an example?

An escape sequence in C language is a sequence of characters that doesn’t represent itself when used inside string literal or character. It is composed of two or more characters starting with backslash . For example: n represents new line.

What is escape sequence in Python with example?

Useful Escape Sequences.

What is escape character?

r is a carriage return character; it tells your terminal emulator to move the cursor the start of the line. The cursor is the position where the next characters will be rendered. So, printing a r allows to override the current line of the terminal emulator.

Does Python have escape characters?

In Python strings, the backslash “” is a special character, also called the “escape” character. It is used in representing certain whitespace characters: “t” is a tab, “n” is a newline, and “r” is a carriage return.

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