String Comparison in Python
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Lecture 73:- String Comparison in Python
In Python, you can compare strings using comparison operators. String comparison is based on lexicographic (dictionary) order, where each character in the string is compared based on its Unicode code point value.
The comparison operators used for string comparison are:
- Equality (
==): Checks if two strings have the same content.pythonCopy code
str1 = "hello" str2 = "Hello" print(str1 == str2) # Output: False
- Inequality (
!=): Checks if two strings have different content.pythonCopy code
str1 = "apple" str2 = "orange" print(str1 != str2) # Output: True
- Less than (
<) and Less than or equal to (<=): Compares two strings lexicographically.pythonCopy code
str1 = "apple" str2 = "banana" print(str1 < str2) # Output: True print(str1 <= str2) # Output: True
- Greater than (
>) and Greater than or equal to (>=): Compares two strings lexicographically.pythonCopy code
str1 = "banana" str2 = "apple" print(str1 > str2) # Output: True print(str1 >= str2) # Output: TrueKeep in mind that string comparison is case-sensitive, meaning uppercase characters are considered "less than" lowercase characters based on their Unicode values.
If you want to perform case-insensitive string comparison, you can convert both strings to lowercase or uppercase using the
lower()orupper()methods before comparing them.pythonCopy code
str1 = "Hello" str2 = "hello" print(str1.lower() == str2.lower()) # Output: TrueIt's important to remember that when comparing strings, their contents are compared, not their memory addresses. So even if two strings have the same content but are stored in different memory locations, the comparison will still yield the correct result.
String comparison is a fundamental operation in Python, and it allows you to compare and make decisions based on the contents of strings in your code.
- 1. Background Part 1 (IO Devices, CPU and Memory) In Python
- 2. Background Part 2 (Computer Organization & Operating System) In Python
- 3. Why Do We Need Programming Languages in Python
- 4. Python Introduction in Python
- 5. Python Standard and Implementations in Python
- 6. How Python Programs are Executed
- 7. Python Programming Terminology
- 8. Python Installation and First Program
- 9. Comments in Python
- 1. Arithmetic Operators in Python
- 2. Logical Operators in Python
- 3. Identity Comparison Operators in Python
- 4. Membership Test Operators in Python
- 5. Bitwise Operators in Python Part 1
- 6. Bitwise Operators In Python Part 2
- 7. Arithmetic Progression nth Term in Python
- 8. Geometric Progression nth Term in Python
- 9. Sum Of Natural numbers In Python
- 10. Find Last Digit In Python
- 11. Day Before N Days In Python
- 1. Loops In Python
- 2. While Loops In Python
- 3. range() In Python
- 4. For Loop In Python
- 5. Table Of A Number In Python
- 6. Break In Python
- 7. Continue In Python
- 8. Nested Loop In Python
- 9. Square Pattern In Python
- 10. Printing Triangle Pattern In Python
- 11. Inverted Triangle In Python
- 12. Pyramid Pattern In Python
- 13. Count Digits In Python
- 14. Factorial In Python
- 15. GCD In Python
- 16. LCM In Python
- 17. Fibonacci Numbers In Python
- 18. Check For Prime In Python
- 19. All Divisors In Python
- 20. Optimizations Of All Divisors And Prime Python
- 1. Strings In Python
- 2. Escape Sequences And Raw Strings Python
- 3. Formatted String In Python
- 4. String Operations Part(1) In Python
- 5. String Operations Part(2) In Python
- 6. String Comparison in Python
- 7. Pattern Searching In Python
- 8. Check For Palindrome In Python
- 9. Reverse A String In Python
- 10. Decimal to Binary In Python
- 11. Binary to Decimal Conversion In Python
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