Day09 - String in Python

Strings in Python:

String is a collection of alphabets, words or other characters. It is a sequence of characters. Or anything enclosed in single or double quote is known as "string".

Example - Using double quote

data = "Python Language"  #using double quote
print(data)
print(type(data))   #channing rule

data = 'Python Language'  #using single quote
print(data)
print(type(data))   #channing rule

Output:

Python Language
<class 'str'>

Python Language
<class 'str'>

Quotation marks in between string - Use of \

Backslash - use to convert special character into normal character.

data = 'Python Language\ 123 "Hello world"'
print(data)
print(type(data))

Output:

Python Language 'Hello world
<class 'str'>

Multiline string:

A multiline string in Python begins and ends with either three single quotes or three double quotes. Any quotes, tabs, or newlines in between the “triple quotes” are considered part of the string.

Example:

b = """Line1 python
Line2 python
Line3 python """ 
print(b) #triple double quote
print(type(b))

Output:

Line1 python
Line2 python
Line3 python
<class 'str'>

Indexing:

It is ' accessing characters of a string. In python string is like an array of characters (not exactly).

name = "Python"
print(name[0]) #output = P
print(name[1]) #output = y
print(name[2]) #output = t
print(name[3]) #output = h
print(name[4]) #output = o
print(name[5]) #output = n
#print(name[5])   #throws index error - b/c there is nothing at 6.

Output:

P
y
t
h
o
n

Looping through the string:

for loop - characters print all the characters of string.

Example:

name = "Python"
for character in name:
    print(character)

Output:

P
y
t
h
o
n

Key Points:

• \t - use to create 4spaces in string.

• \n - use to add new line in string.

• Triple single quotes or Triple double quotes are the boundaries of a string.

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