5.3. Formatting Strings#

  • Dynamic strings

name='Sahil'
age=25

5.3.1. Using .format()#

print('My name is {}. I am {} years old'.format(name,age))

My name is Sahil. I am 25 years old

5.3.2. F-string - Better way !!#

  • Just place f in start of string

  • You can add variables directly

  • You don’t need to first convert everything to string and then do concatenation

print(f"My name is {name}. I am {age} years old")

My name is Sahil. I am 25 years old

  • You can run functions on variables and evaluate or perform computation within string

print(f"My name is {name.upper()}. I am {float(age+1)} years old")

My name is SAHIL. I am 26.0 years old

dict={'name':'sahil','age':25}

print(f'My name is {dict['name']}. I am {dict['age']} years old')

  Input In [6]
    print(f'My name is {dict['name']}. I am {dict['age']} years old')
                              ^
SyntaxError: f-string: unmatched '['

  • Note: Error came because pythn gets confused in single quotes used in string

    • So,always use double quotes to start and end a string

print(f"My name is {dict['name']}. I am {dict['age']} years old")

My name is sahil. I am 25 years old