Python string first letter uppercase

Using Python to Capitalize first letter

In this short tutorial, we look at how you could use Python to Capitalize the first letter. We also look at all the other methods that can be used to change cases.

Table of Contents

While using Python you would deal with a lot of strings and sometimes you might want to display them in a particular case. This may not be a problem if the string is hardcoded, however, while using dynamic data e.g.: Displaying the user name on the top of the screen. The data for this might contain strings in various cases so it is important to fail-proof such instances.

This article is a tutorial about the same.

How do you capitalize the first letter of a string?

The first letter of a string can be capitalized using the capitalize() function. This method returns a string with the first letter capitalized. If you are looking to capitalize the first letter of the entire string the title() function should be used.

The following is the syntax to use python to capitalize first letter:

Here “string” refers to the string you are looking to capitalize

Code — Python capitalize first letter

flexiple = "join are freelance community" print(flexiple.capitalize()) print(flexiple)

Join are freelance community join are freelance community

As you can see above, the first letter of the first string was capitalized. After which I have again printed the original string to show you that the original string has not been changed.

Using upper(), lower() and tittle():

Apart from using Python to capitalize the first letter it can also be used to change other cases.

The upper() method for example returns a string with all the characters in the upper case and the lower() method does the opposite.

The title() method is used to capitalize the first letter of all the words in a string.

The syntax is similar to capitalize, you can see the implementation in the code section below.

flexiple = "join are freelance community" print(flexiple.upper()) print(flexiple.lower()) print(flexiple.title()) print(flexiple)

JOIN ARE FREELANCE COMMUNITY join are freelance community Join Are Freelance Community join are freelance community

As you can see in each method the case is changed accordingly and I have again printed the string to show that the original string has not changed.

Closing Thoughts — Python capitalize first letter

Learning to use Python to capitalize the first letter of a string may not be a very important topic but this is something that developers are expected to know.

Practicing and being aware of the various methods would help you when you face such cases.

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7 Ways in Python to Capitalize First Letter of a String

In this article, we will be learning how one can capitalize the first letter in the string in Python. There are different ways to do this, and we will be discussing them in detail.

Method 1: str.capitalize() to capitalize the first letter of a string in python:

• Syntax: string.capitalize()
• Parameters: no parameters
• Return Value: string with the first capital first letter

string = "python pool" print("Original string:") print(string) print("After capitalizing first letter:") print(string.capitalize())

Output & Explanation:

When we use the capitalize() function, we convert the first letter of the string to uppercase. In this example, the string we took was “python pool.” The function capitalizes the first letter, giving the above result.

Method 2: string slicing + upper():

• Synatx: string.upper()
• Parameters: No parameters
• Return Value: string where all characters are in upper case

string = "python pool" print("Original string:") print(string) result = string[0].upper() + string[1:] print("After capitalizing first letter:") print(result)

Output & Explanation:

We used the slicing technique to extract the string’s first letter in this example. We then used the upper() method to convert it into uppercase.

Method 3: str.title():

• Syntax: str.title()
• Parameters: a string that needs to be converted
• Return Value: String with every first letter of every word in capital

string = "python pool" print("Original string:") print(string) print("After capitalizing first letter:") print(str.title(string))

Output & Explanation:

str.title() method capitalizes the first letter of every word and changes the others to lowercase, thus giving the desired output.

Method 4: capitalize() Function to Capitalize the first letter of each word in a string in Python

string = "python pool" print("Original string:") print(string) print("After capitalizing first letter:") result = ' '.join(elem.capitalize() for elem in string.split()) print(result)

Output & Explanation:

In this example, we used the split() method to split the string into words. We then iterated through it with the help of a generator expression. While iterating, we used the capitalize() method to convert each word’s first letter into uppercase, giving the desired output.

Method 5: string.capwords() to Capitalize first letter of every word in Python:

• Syntax: string.capwords(string)
• Parameters: a string that needs formatting
• Return Value: String with every first letter of each word in capital

import string txt = "python pool" print("Original string:") print(txt) print("After capitalizing first letter:") result = string.capwords(txt) print(result)

Output & Explanation:

capwords() function not just convert the first letter of every word into uppercase. It also converts every other letter to lowercase.

Method 6: Capitalize the first letter of every word in the list in Python:

colors=['red','blue','yellow','pink'] print('Original List:') print(colors) colors = [i.title() for i in colors] print('List after capitalizing each word:') print(colors)

Output & Explanation:

Iterate through the list and use the title() method to convert the first letter of each word in the list to uppercase.

Method 7:Capitalize first letter of every word in a file in Python

file = open('sample1.txt', 'r') for line in file: output = line.title() print(output)

Output & Explanation:

Python Pool Is Your Ultimate Destination For Your Python Knowledge

We use the open() method to open the file in read mode. Then we iterate through the file using a loop. After that, we capitalize on every word’s first letter using the title() method.

FAQs

This function will provide an output with the first letter as a capital letter and the rest of the letters in lowercase format. In case the variable starts with a number or any other symbol, it won’t capitalize anything. It changes only the first letter and the other letters will be made small even if they are capitalized initially.
Example:
a = ‘pythonpool’
b = a.capitalize()
print(‘ans is ‘, b)
So output will be:
ans is Pythonpool

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Conclusion

The various ways to convert the first letter in the string to uppercase are discussed above. All functions have their own application, and the programmer must choose the one which is apt for his/her requirement.

However, if you have any doubts or questions, do let me know in the comment section below. I will try to help you as soon as possible.

Happy Pythoning!

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8 Ways to Capitalize First Letter in Python

Strings are one of the most used python data structures. While programming in python, some strings are used in uppercase while some are in lowercase and some in combination. Hence, it is chaotic to pay attention to every string you create and use while programming, and also quite difficult to correct it manually.

As it is important and default format to capitalize the first letter of every word for readers convenience, we have presented a detailed article representing 8 different methods to capitalize the first letter in python and the examples. But, before learning those methods, let us have a brief introduction to strings in python.

What are Strings in Python?

Python string is the collection of the characters surrounded by single quotes, double quotes, or triple quotes. The computer does not understand the characters; internally, it stores manipulated characters as the combination of the 0’s and 1’s. This means that strings can be parsed into individual characters and that individual characters can be manipulated in various ways.

This is what makes Python so versatile: you can do almost anything with it, and some things even work the way they do in another language. To learn more about strings in python, refer to our article «4 Ways to Convert List to String in Python».

For Example

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