Tag: Characters
Python : How to access characters in string by index ?
In this article we will discuss how to access characters in string by index. Accessing characters by index in string | indexof In Python indexing of strings starts from 0 till n-1, where n is the size of string. So characters in string of size n, can be accessed from 0 to n-1. Advertisements Suppose we …
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Python : How to iterate over the characters in string ?
In this article we will discuss different ways to iterate or loop over all the characters of string in forward, backward direction and also by skipping over certain characters. Iterate over string using for loop Iterating over the string is simple using for loop and in operator i.e. Advertisements sampleStr = “Hello!!” print(“**** Iterate over …
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Python : How to replace single or multiple characters in a string ?
In this article we will discuss how to replace single or multiple characters in a string in Python. Python provides a str.replace() function i.e. Advertisements str.replace(old, new , count) It returns a new string object that is a copy of existing string with replaced content. Also, If count is not provides then it will return …
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Python : How to remove characters from a string by Index ?
In this article we will discuss how to remove characters from a string at specific index position or in a given range of indices. We can remove characters from string by slicing the string into pieces and then joining back those pieces. Advertisements String Slicing In Python strings are immutable i.e. we can not modify …
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Find frequency of each character in string and their indices | Finding duplicate characters in a string
In this article we will discuss different ways to fetch the frequency or occurrence count of each character in the string and their index positions in the string using collections.Counter() and regex. Get Frequency of each character in string using collections.Counter() collections.counter(iterable-or-mapping) Counter is a dict subclass and collections.Counter() accepts an iterable entity as argument …
Count occurrences of a single or multiple characters in string and find their index positions
In this article we will discuss different ways to count occurrences of a single character or some selected characters in a string and find their index positions in the string. Count Occurrences of a single character in a String using string.count() In Python the String class contains a method to count to the occurrences of …
Python: How to get first N characters in a string?
In this article, we will discuss how to fetch/access the first N characters of a string in python. This N can be 1 or 3 etc. Table Of Contents Get the first character of a string in python Get first N characters in a string Get first three characters of a string in python Get …
Python: How to get Last N characters in a string?
In this article, we will discuss how to fetch the last N characters of a string in python. This N can be 1 or 4 etc. In python, a String is a sequence of characters, and each character in it has an index number associated with it. For example, we have a string variable sample_str …
Remove last N characters from string in Python
In this article we will discuss different ways to delete last N characters from a string i.e. using slicing or for loop or regex. Remove last N character from string by slicing In python, we can use slicing to select a specific range of characters in a string i.e. Advertisements str[start:end] It returns the characters …
Python: Remove characters from string by regex & 4 other ways
In this article we will discuss different ways to delete single or multiple characters from string in python either by using regex() or translate() or replace() or join() or filter(). Remove characters from string using regex Python’s regex module provides a function sub() i.e. Advertisements re.sub(pattern, repl, string, count=0, flags=0) It returns a new string. …
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