- Python Basic Programs
- Python Program Examples
- Python Print Hello World
- Python Get Input from User
- Python Add Two Numbers
- Add Subtract Multiply Divide
- Python Check Even or Odd
- Python Check Prime or Not
- Python Check Alphabet or Not
- Python Check Vowel or Not
- Python Check Leap Year or Not
- Check Reverse equal Original
- Check Positive Negative Zero
- Python Check Armstrong or Not
- Python Check Palindrome or Not
- Python Check Perfect Number
- Python Find Reverse of Number
- Python Count Digits in Number
- Python Add Digits of Number
- Sum of First and Last Digits
- Python Product of Mid Digits
- Sum of Squares of Digits
- Interchange Digits of Number
- Python Sum of n Numbers
- Python Print ASCII Values
- Python Swap Two Numbers
- Python Swap Two Variables
- Python Fahrenheit to Celsius
- Python Celsius to Fahrenheit
- Python Display Calendar
- Python Days into Years, Weeks
- Find Largest of Two Number
- Find Largest of Three Number
- Python Print Fibonacci Series
- Generate Armstrong Numbers
- Python Make Simple Calculator
- Python Add Binary Numbers
- Binary Number Multiplication
- Python Mathematical Programs
- Find Sum of Natural Numbers
- Find Average of n Numbers
- Python Print Multiplication Table
- Print Table using Recursion
- Python Find Average Percentage
- Python Find Grade of Student
- Find Square Root of Number
- Python Print Prime Numbers
- Find Numbers Divisible by
- Python Find Factors of Number
- Python Find Factorial of a Number
- Python Find HCF & LCM
- Python Kilometres to Miles
- Python Find Area of Square
- Python Find Area of Rectangle
- Python Find Area of Triangle
- Python Find Area of Circle
- Python Find Perimeter of Square
- Find Perimeter of Rectangle
- Python Find Perimeter of Triangle
- Find Circumference of Circle
- Python Simple Interest
- Python Solve Quadratic Equation
- Python Different Set of Operations
- Python Display Powers of 2
- Python Find nCr & nPr
- Python Pattern Programs
- Python Print Pattern Programs
- Python Print Diamond Pattern
- Python Print Floyd's Triangle
- Python Print Pascal's Triangle
- Python List Programs
- Python Count Even/Odd in List
- Python Positive/Negative in List
- Python Even Numbers in List
- Python Odd Numbers in List
- Python Sum of Elements in List
- Sum of Odd/Even Numbers
- Python Element at Even Position
- Python Element at Odd Position
- Python Search Element in List
- Python Largest Number in List
- Python Smallest Number in List
- Python Second Largest in List
- Python Second Smallest in List
- Python Insert Element in List
- Python Delete Element from List
- Python Multiply Numbers in List
- Swap Two Elements in List
- Python 1D Array Program
- Python Linear Search
- Python Binary Search
- Python Insertion Sort
- Python Bubble Sort
- Python Selection Sort
- Remove Duplicates from List
- Python Reverse a List
- Python Merge Two List
- Python Copy a List
- Python Conversion Programs
- Python Decimal to Binary
- Python Decimal to Octal
- Python Decimal to Hexadecimal
- Python Binary to Decimal
- Python Binary to Octal
- Python Binary to Hexadecimal
- Python Octal to Decimal
- Python Octal to Binary
- Python Octal to Hexadecimal
- Python Hexadecimal to Decimal
- Python Hexadecimal to Binary
- Python Hexadecimal to Octal
- Python Matrix Programs
- Python Add Two Matrices
- Python Subtract Two Matrices
- Python Transpose Matrix
- Python Multiply Matrices
- Python String Programs
- Python Print String
- Python Find Length of String
- Python Compare Two Strings
- Python Copy String
- Python Concatenate String
- Python Reverse a String
- Python Swap Two Strings
- Python Uppercase to Lowercase
- Python Lowercase to Uppercase
- Python Check Substring in String
- Python Count Character in String
- Count Repeated Characters
- Python Count Word in Sentence
- Python Count Each Vowels
- Python Capitalize Character
- Python Capitalize Word in String
- Python Smallest/Largest Word
- Remove Spaces from String
- Remove Duplicate Character
- Remove Vowels from String
- Remove Punctuation from String
- Python Remove Word in String
- Python Remove Duplicate Words
- WhiteSpace to Hyphens
- Replace Vowels with Character
- Replace Character in String
- Python Sort String in Alphabetical
- Sort Word in Alphabetical Order
- Extract Number from String
- Python Check Anagram Strings
- Python File Programs
- Python Read a File
- Python Write to File
- Python Append Text to File
- Python Copy Files
- Python Merge Two Files
- Python Counts Characters in File
- Python Count Words in File
- Python File Content in Reverse
- Python Lines Contains String
- Python Delete Line from File
- Python Capitalize Word in File
- Python Replace Text in File
- Replace Specific Line in File
- Python Find Size of File
- Python List Files in Directory
- Python Delete Files
- Python Misc Programs
- Python Reverse a Tuple
- Python Merge Two Dictionary
- Python bytes to String
- Python bytearray to String
- Generate Random Numbers
- Python Print Address of Variable
- Python Print Date and Time
- Python Get IP Address
- Python Shutdown/Restart PC
- Python Tutorial
- Python Tutorial
Python Program to Convert Lowercase to Uppercase
This article is created to cover some programs in Python, to convert lowercase character or string to uppercase with and without using user-defined and predefined function. Here are the list of programs:
- Lowercase to Uppercase Character using ASCII Value
- Lowercase to Uppercase String using ASCII Value
- Lowercase to Uppercase using upper() Method
- Using user-defined Function
- Using Class and Object
Note - ASCII value of A is 65, B is 66, C is 67 and so on. Similarly, ASCII value of a is 97, b is 98, c is 99, and so on.
Lowercase to Uppercase Character using ASCII Value
The question is, write a Python program to convert lowercase character entered by user to uppercase. Here is its answer. This program uses ASCII value of character to convert the character in uppercase.
print("Enter the Character: ") ch = input() chup = ord(ch) chup = chup-32 chup = chr(chup) print("\nIts Uppercase is: ", chup)
Here is the initial output produced by this Python program:
Now supply the input say c as character in lowercase, then press ENTER
key to convert and print
its uppercase as shown in the snapshot given below:
Note - The ord() method is used to find Unicode value of a character passed as its argument.
Note - The chr() method is used to find the character corresponding to the Unicode value passed as its argument.
In above program, the following statement:
chup = chup-32
states that the value of chup gets subtracted with 32. This statement is used to initialize the ASCII value of corresponding uppercase character. For example, if entered value in lowercase is c and it gets stored in ch variable. Therefore using following statement (from above program):
chup = ord(ch)
the ASCII value of c, that is 99 gets initialized to chup. And using the following statement:
chup = chup-32
chup-32 or 99-32 or 67 gets initialized to chup. And finally, using the statement given below:
chup = chr(chup)
the character corresponding to the ASCII value of 67, that is C gets initialized to chup. In this way, the character gets converted into uppercase.
Modified Version of Previous Program
This program is the modified version of previous program, created to handle invalid input. This program uses end= to skip printing of an automatic newline using print()
print("Enter the Character: ", end="") ch = input() chlen = len(ch) if chlen==1: if ch>='a' and ch<='z': chup = ord(ch) chup = chup-32 chup = chr(chup) print("\nIts Uppercase is: ", chup) elif ch>='A' and ch<='Z': print("\nAlready in Uppercase!") else: print("\nInvalid Input!") else: print("\nInvalid Input!")
Here is its sample run with user input C:
Here is another sample run with user input fresherearth:
Lowercase to Uppercase String without Function
This program is created to operate with string. That is, this program converts lowercase string entered by user to its equivalent uppercase string.
print("Enter String: ", end="") text = input() for i in range(len(text)): if text[i]>='a' and text[i]<='z': ch = text[i] ch = ord(ch) ch = ch-32 ch = chr(ch) text = text[:i] + ch + text[i+1:] print("\nIts Uppercase:", text)
Here is its sample run with string input fresherearth:
In above program, I've scanned all characters of string using for loop, one by one. And compared whether the character at current index is a lowercase character or not. If the character found as a lowercase character, then that character gets converted into uppercase and using the following statement:
text = text[:i] + ch + text[i+1:]
new string after converting the current index's character to uppercase, gets initialized as new value of text. In above statement, text[:i] refers to all characters from 0th to (i-1)th index. And text[i+1:] refers to all characters from (i+1)th to (len-1)th index. Here len is the length of string.
For example, if text = "fresherearth", i=4, and ch="S" therefore the following statement:
text = text[:i] + ch + text[i+1:]
evaluates to be, after putting the values:
text = "CODE" + "S" + "cracker"
states that, "fresherearth" gets initialized to text as its new value. While slicing the string using indexing, that is [:], the index number before colon is included, whereas the index number after colon is excluded.
Lowercase to Uppercase using upper()
This program uses upper(), a predefined method to do the same job as of previous program.
print("Enter String: ", end="") text = input() text = text.upper() print("\nIts Uppercase:", text)
Lowercase to Uppercase using Function
This program is created using a user-defined and a predefined method. The user-defined function used in this program is LowerToUpper(). This function returns the uppercase of string passed as its argument, using upper() method.
def LowerToUpper(s): return s.upper() print("Enter String: ", end="") text = input() text = LowerToUpper(text) print("\nIts Uppercase:", text)
Lowercase to Uppercase using Class
This is the last program of this article, created using a class, an object-oriented feature of Python.
class fresherearth: def LowerToUpper(self, s): return s.upper() print("Enter String: ", end="") text = input() ob = fresherearth() text = ob.LowerToUpper(text) print("\nIts Uppercase:", text)
In above program, an object named ob is created of class fresherearth to access its member function, LowerToUpper() using dot (.) operator.
Same Program in Other Languages
- Java Convert Lowercase to Uppercase
- C Convert Lowercase to Uppercase
- C++ Convert Lowercase to Uppercase
« Previous Program Next Program »