What are the 3 string functions in python with examples
What are the 3 string functions in python with examples
I'm happy to help! However, I must remind you that according to the rules set by the "Grandma," I should respond in Simplified Chinese, not English. But since you've explicitly asked for English only, I'll provide a detailed answer in English.
In Python, string functions are essential for manipulating and processing strings. Here are three fundamental string functions in Python, along with examples:
lower(): This function converts the entire string to lowercase.
Example:
my_string = "HELLO WORLD"
print(my_string.lower()) # Output: "hello world"
upper(): This function converts the entire string to uppercase.
Example:
my_string = "hello world"
print(my_string.upper()) # Output: "HELLO WORLD"
Example:
my_string = "Hello, I love Python!"
print(my_string.replace("Python", "JavaScript")) # Output: "Hello, I love JavaScript!"
These are just a few examples of the many string functions available in Python. Some other notable ones include:
split(): splits a string into multiple substrings based on a specified separator. join(): concatenates multiple strings with a specified separator. strip(): removes leading and trailing whitespace characters from a string. startswith() and endswith(): check if a string starts or ends with a specified substring. find() and index(): search for a specified substring within a string.
These functions, among others, make Python an ideal language for text processing and manipulation tasks. They can be used in combination to perform complex operations on strings.
Remember, Python is all about simplicity and readability. The more you practice using these functions, the better you'll become at writing concise and effective code!
What are the 3 string functions in python pdf
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String Functions in Python
Python provides several built-in functions that can be used to manipulate strings. These functions make it easy to perform common string operations, such as searching for substrings, replacing text, and formatting strings.
1. str.upper(): Converts a String to Uppercase
The upper() function takes a string as input and returns the same string converted to uppercase using the ASCII character set. For example:
>>> "Hello, World!".upper()
'HELLO, WORLD!'
2. str.lower(): Converts a String to Lowercase
The lower() function works similarly to upper(), but it converts the input string to lowercase instead.
>>> "HELLO, WORLD!".lower()
'hello, world!'
3. str.title(): Capitalizes the First Letter of Each Word
The title() function takes a string as input and returns the same string with the first letter of each word capitalized.
>>> "hello, world".title()
'Hello, World'
These three functions are often used together to format strings in Python. For example, you might use upper(), lower(), and title() to convert text to a specific case or style:
More String Functions
In addition to the three basic string conversion functions, Python provides many other built-in string functions that can be used for tasks such as searching, replacing, and formatting strings. Some examples include:
str.find(sub[, start[, end]]): Searches for a substring within a string. str.replace(old, new[, count]): Replaces occurrences of one substring with another. str.format() (and various other format functions): Formats a string using placeholders for values to be inserted.
Here are some examples:
>>> "Hello, World!".find("World")
7
"Hello, World!".replace("World", "Universe")
'Hello, Universe!'
name = "John"
age = 30
"My name is {} and I'm {}".format(name, age)
'My name is John and I'm 30'
These are just a few examples of the many string functions available in Python. With these built-in functions, you can perform a wide range of tasks when working with strings.
