In this tutorial, We are going to explain how to use Python string repetition operator with basic syntax and many examples for better understanding.

How to repeat string in Python? To repeat a string in Python, We use the asterisk operator ” * ” The asterisk. is used to repeat a string n (number) of times. Which is given by the integer value ” n ” and creates a new string value. It uses two parameters for an operation: the integer value and the other is String.

Syntax:

<string_variable_name1>  * N where  N = 1,2,3.......n

OR

N * <string_variable_name1>  where  N = 1,2,3.......n

Input Parameters:

• string_variable_name1 : The string that we want to be repeated.
• N : where is the number of times that we want that string to be repeated ex: 1,2,3,……..n

Example (1)

#repeat string variable
str1="abc12"
print('New string variable:',3* str1)

Output of example 1:

New string variable: abc12abc12abc12

In the above example, using the repetition operator (*), we have repeated ‘str1’ variable  3 times by ‘3* str1’ in the print statement and created a new string as ‘abc12abc12abc12’.

Example (2)

#repeat string value
print('New string value:',(3 * "Python") + ("V2"*2))

Output of example 2:

New string value: PythonPythonPythonV2V2

In the above example, we have repeated two different string values ‘Python’ and ‘V2’ as 3 and 2 times respectively in the print statement and created a new string as ‘ PythonPythonPythonV2V2’.

Repeat Python String using Variables or Expressions

The “*” operator can also be used with variables or expressions that evaluate to integers. For example:

Example (3)

string = "hello"
n = 3
repeated_string = string * n
print(repeated_string)

Output of example 3:

hellohellohello

This code will output “hellohellohello”, repeating the original string three times. Note that if you try to multiply a string by a non-integer value or a negative integer, you’ll get a TypeError.

Repeat String in Python using String Formatting

Another useful technique for repeating strings is to use string formatting. This can be especially helpful if you want to create a repeated string with a dynamic value in the middle. For example:

Example (4)

template = "The answer is {}."
n = 42
repeated_template = ("\n".join([template] * n)).format(*[str(i) for i in range(n)])
print(repeated_template)

Output of example 4:

The answer is 0.
The answer is 1.
The answer is 2.
…
The answer is 41.

In this example, we use the join() method to join a list of n copies of the template string with a newline character between each copy. Then we use the format() method to substitute each value from 0 to n-1 into the {} placeholder in the template string.

One thing to be aware of when repeating strings in Python is that Python strings are immutable, which means you can’t modify them in place. This means that each time you “modify” a string by repeating it, you’re actually creating a new string object in memory. For small strings, this is usually not a big deal, but if you’re working with very large strings or repeating them many times, you may run into performance issues. In these cases, you may want to consider using a different data structure or algorithm that is better suited to your needs.

Frequently Asked Question FAQ

Q: Which operator is used to repeat the string for a given number of times?

A: The multiplication operator (*) is used to repeat a string in Python for a given number of times. For example, if you have a string s and you want to repeat it n times, you can use the expression s * n to create a new string that consists of n copies of the original string s.

Q: Can I repeat a string using a non-integer value or a negative integer?

A: No, attempting to repeat a string using a non-integer value or a negative integer will result in a TypeError in Python. The multiplication operator can only be used with integer values.

Q: Are there any other techniques for repeating strings in Python?

A: Yes, there are other techniques for repeating strings in Python. One alternative is to use string formatting, which allows you to create a repeated string with dynamic values. Another alternative is to use loops or list comprehension to create a list of repeated strings, which can then be joined together using a separator. However, it’s worth noting that each of these techniques has its own advantages and disadvantages depending on the specific use case.

Q: Are there any performance considerations when repeating strings in Python?

A: Yes, there are performance considerations when repeating strings in Python. Because Python strings are immutable, creating a new string object each time you repeat a string can be memory-intensive and slow for large strings or when repeating them many times. In these cases, it may be more efficient to use a different data structure or algorithm that is better suited to the specific use case.

Conclusion

In this tutorial, you have learned how to repeat a string in python n number of times.
If you have an inquiry or doubt don’t hesitate to leave them in comment. we are waiting your feedback as well.

Hopefully, it was clear and concise.

Similar Python Operators:

• Concatenation(‘+’) : It adds two string.
• Membership(‘in’ & ‘not in’) : It returns True , if given element is present in string otherwise returns False.
• string Iteration : It returns element of string by using for loop with string.

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