Output of Python Program | Set 1 (Strings)

Output of Python Programs | Set 1 (Strings)

Strings are one of the most commonly used data types in Python. They represent sequences of characters and come with a variety of built-in methods to manipulate text. Understanding string operations is essential for any Python programmer.

Basic String Operations

Python strings can be concatenated, repeated, sliced, and indexed just like lists. Here’s a simple example demonstrating some common operations:

text = "Hello"
print(text + " World")   # Concatenation
print(text * 3)          # Repetition
print(text[1:4])         # Slicing
print(text[-1])          # Indexing from the end

Output:

Hello World
HelloHelloHello
ell
o

String Methods

Python strings have many helpful methods such as upper(), lower(), strip(), and replace(). These methods enable you to modify or inspect strings easily.

name = "  Python Programming  "
print(name.strip())             # Removes leading and trailing spaces
print(name.upper())             # Converts to uppercase
print(name.lower())             # Converts to lowercase
print(name.replace("Python", "Java"))  # Replaces substring

Output:

Python Programming
  PYTHON PROGRAMMING  
  python programming  
  Java Programming  

Practice Problem

Consider the following Python program. Predict the output:

message = "GeeksForGeeks"
print(message[5:9])
print(message[::-1])
print(message.lower().count('e'))

Solution to Practice Problem

Output Explanation:

For the code above, the output will be:

ForG
skeeGrofskeeG
5

Explanation:

• message[5:9] extracts characters from index 5 to 8 which are 'ForG'.
• message[::-1] reverses the string.
• message.lower().count('e') converts the string to lowercase and counts the occurrences of 'e'.

Conclusion

Strings are extremely versatile in Python. Familiarity with basic operations and built-in methods can make your programming tasks easier, especially when dealing with text processing. Try experimenting with different string methods to get a better grasp of their behavior.