String

 # what is a data type

# data type is used to express the type of variable.

# str is a type used for text.

# int,float and complex are the types for number

# bool is a type for boolean values

# Type-Casting

# typecast integer to string

a = 10

b = str(a)

print(b)

print(type(b)) #we can check the type of variable

#typecast string to integer

c = "10"

d = int(c)

print(d)

print(type(d))

#String

#String is a type

str1 = "ChiTRAnsh "

str2 = "thakur"

str3 = str1+str2

print(str3)

print(len(str3))

#String is an array of characters.

print(str1[3]) #we can access the element using index number

#looping

for x in str2:

     print(x)

#slicing

print(str1[3:9])

#modify strings

print(str1)

print(str1.upper())

print(str1.lower())

print(str1.capitalize())

#strip() - strip() is used to remove the whitespaces from begining or end.

str5 = " chitransh thakur "

print(str5.strip())  

#split() - split() is used to split the string as desired.

str6 = "Hello , world"

print(str6.split(","))

#As we know that string and number can not be combined in Python.

#lets take an example

age1 = 21

sen1 = "My age is" + age1

print(sen1)

#TypeError: can only concatenate str (not "int") to str

#how can we resolve this....Using format()

Name = "chitransh thakur"

Class = "MCa"

age = 21

sen = "My Name is {0} , My age is {1} and My Class is {2}"

print(sen.format(Name.capitalize(),age,Class.capitalize()))

#Escape Sequences

print('Hello \n this \n is python \n a beautiful language') #new line

print("Hey Man! how you doing \"chitransh\"") # \"some text\" escape sequence

print("hello this is\b python a beautiful language")

#here \b means backspace ..it will delete 's' in the output