How To Find Length Of String In Python 3
What is Python String Length?
Python string length is the function through which we find the length of the string. There is an inbuilt function called len() in python, so this len() role finds the length of the given string, array, list, tuple, lexicon, etc.
Through the len() part, we tin optimize the performance of the plan. The number of elements stored in the object is never calculated, and so len() helps provide the number of elements.
Syntax
Parameters
Cord : This will calculate the length of the value passed in the string variable.
Return Value
It will return an interger value i.e. the length of the given string.
Various Type Of Return Value
- Cord
- Empty
- Collection
- Type Error
- Lexicon
1. Cord:
It is used to return the number of characters present in the cord, including punctuation, space, and all types of special characters. However, information technology would aid if you were careful while using the len of a Naught variable.
2. Empty:
In this the render call has the goose egg characters, merely it is always None.
3. Collections:
The len() built in office return the number of elements in the collection.
4. Type Error:
Len function always depends on the type of the variable passed to information technology. A Non-Blazon len() does non have any built-in support.
5. Dictionary:
In this, each pair is counted every bit i unit. Still, Keys and values are not contained in the dictionary.
Ways to find the length of cord in Python
1. Using the born role len()
# Python code to demonstrate string length # using len str = 'Latracal' print(len(str)) output:
eight Explanation:
In this code, we have taken str as the variable in which we have stored the string named 'Latracal' and so applied the len() in which we have put str in between. so the output came is 8 as the word 'Latracal' contains 8 characters.
two. Using for loop to Detect the length of the string in python
A cord can be iterated over easily and directly in for loop. By maintaining a count of the number of iterations will result in the length of the cord.
# Python code to demonstrate string length # using for loop # Returns length of string def findLength(str): counter = 0 for i in str: counter += 1 return counter str = "Latracal" impress(findLength(str)) output:
eight Explanation:
In this lawmaking, nosotros have used for loop to discover the length of the string. Firstly, we take taken an str variable that nosotros have given 'Latracal' as the string. Secondly, nosotros have chosen the findLength role in which nosotros have counter equals 0, After that, for loop was written from 0 to cord, and the counter value gets increased by i at a fourth dimension. At last, we have printed the counter value.
3. Using while loop and Slicing
We slice a string making it shorter by 1 at regular intervals to fourth dimension with each iteration till the string is the empty string. This is when the while loop stops. By maintaining a count of the number of iterations volition outcome in the length of the string.
# Python lawmaking to demonstrate cord length # using while loop. # Returns length of string def findLength(str): count = 0 while str[count:]: count = count + 1 return count str = "LatracalSolutions" print(findLength(str)) output:
17 Explanation:
In this code, we accept used for loop to find the length of the cord. Firstly, we have taken an str variable in which we have given 'LatracalSolutions' as the cord. Secondly, we take called the findLength function in which nosotros have set the value of count equals 0. Thirdly, then applied the while loop in which we are slicing the value of str by one at each iteration till the string becomes empty. And at last, returned the count value.
iv. Using cord methods join and count
The bring together method of strings takes in an iteration and returns a cord which is the chain of the iteration strings. The separator present in the between of elements is the original string on which the method is called. Using the bring together and count method, the joined string in the original string will also result in the string'south length.
# Python code to demonstrate string length # using join and count # Returns length of cord def findLength(str): if not str: return 0 else: some_random_str = 'py' return ((some_random_str).join(str)).count(some_random_str) + 1 str = "LatracalSolutions" impress(findLength(str)) output:
17 Explanation:
In this code, nosotros have used for loop to find the length of the cord. Firstly, we have taken an str variable in which nosotros take given 'LatracalSolutions' as the string. Secondly, so we have called the findLength part in which we have applied if and else part in which if contains the conditions that if the string is empty, it should return 0; otherwise, the else part will piece of work. We have taken some random string 'py' in which the main string will go join by the iteration, and the count value will increase till the cord becomes empty. Later on that, the output gets printed.
5. Using getsizeof() method to Notice Length Of String In Python
This method is used to detect the object's storage size that occupies some space in the memory.
Notation: This method is simply applicable for normal ascii letters. If you have a special character information technology'll not piece of work, as it uses the size of the string in bytes. And so exist careful while using it!
import sys south = "pythonpool" print(sys.getsizeof(southward) - sys.getsizeof("")) Output:
10 Caption:
Here, we have used the sys module which is inbuilt in python. then nosotros have to accept a string s and using the sys module with the getsizeof() method printed the length of the cord.
Example to Find Length of String in Python
# Python lawmaking to demonstrate string length # testing len() str1 = "Welcome to Latracal Solutions Python Tutorials" print("The length of the cord is :", len(str1)) Output:
The length of the string is : 46 Must Read
Summary: Python String Length
Nosotros've seen all v unlike means of finding the cord length, only in conclusion, only one of them is practical. In-built len() keyword is the best way to observe the length of the cord in whatsoever type of format.
- Python len() is a built-in role. You can use the len() to detect the length of the given string, array, list, tuple, lexicon, etc.
- String: This will summate the length of the value passed in the string variable.
- Return value: Information technology volition return an integer value i.e. the length of the given string.
However, if you have any doubts or questions, do let me know in the comment department below. I will try to aid you equally soon equally possible.
Happy Pythoning!
Source: https://www.pythonpool.com/python-string-length/
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