In the previous article, we have discussed Python Program for center() Function
isalnum() Function in Python:
The isalnum() method returns a value True if all of the characters are alphanumeric, which means they are alphabet letters (a-z) and numbers (0-9).
(space)!#%&? etc are examples of characters that are not alphanumeric.
Syntax:
string.isalnum()
Parameters: This function has no parameters.
Examples:
Example1:
Input:
Given first string = "pythonprograms" Given second string = "10345 @@@good morning"
Output:
The above given first string is : pythonprograms The given first string after applying isalnum() function: True The above given second string is : 10345 @@@good morning The given second string after applying isalnum() function: False
Example2:
Input:
Given first string = "hello this is python programming platform" Given second string = "hello123"
Output:
The above given first string is : hello this is python programming platform The given first string after applying isalnum() function: False The above given second string is : hello123 The given second string after applying isalnum() function: True
Program for isalnum() Function in Python
Method #1: Using Built-in Functions (Static Input)
Approach:
- Give the first string as static input and store it in a variable.
- Apply isalnum() function to the given first string that returns a value True if all of the characters are alphanumeric, which means they are alphabet letters (a-z) and numbers (0-9).
- Store it in another variable.
- Print the above-given String.
- Print the above-given String after applying isalnum() function.
- Similarly, do the same for other string and print the result string.
- The Exit of Program.
Below is the implementation:
# Give the first string as static input and store it in a variable. gvn_fststr = "pythonprograms" # Apply isalnum() function to the given first string that returns a value # True if all of the characters are alphanumeric, which means they are alphabet # letters (a-z) and numbers (0-9). # Store it in another variable. rslt_str1 = gvn_fststr.isalnum() # Print the above given String print("The above given first string is :", gvn_fststr) # Print the above given String after applying isalnum() function. print("The given first string after applying isalnum() function:", rslt_str1) # Similarly do the same for other string and print the result string. gvn_scndstr = "10345 @@@good morning" rslt_str2 = gvn_scndstr.isalnum() print("The above given second string is :", gvn_scndstr) print("The given second string after applying isalnum() function:", rslt_str2)
Output:
The above given first string is : pythonprograms The given first string after applying isalnum() function: True The above given second string is : 10345 @@@good morning The given second string after applying isalnum() function: False
Method #2: Using Built-in Functions (User Input)
Approach:
- Give the first string as user input using the input() function and store it in a variable.
- Apply isalnum() function to the given first string that returns a value True if all of the characters are alphanumeric, which means they are alphabet letters (a-z) and numbers (0-9).
- Store it in another variable.
- Print the above-given String.
- Print the above-given String after applying isalnum() function.
- Similarly, do the same for other string and print the result string.
- The Exit of Program.
Below is the implementation:
# Give the first string as user input using the input() function and store it in a variable. gvn_fststr = input("Enter some Random String = ") # Apply isalnum() function to the given first string that returns a value # True if all of the characters are alphanumeric, which means they are alphabet # letters (a-z) and numbers (0-9). # Store it in another variable. rslt_str1 = gvn_fststr.isalnum() # Print the above given String print("The above given first string is :", gvn_fststr) # Print the above given String after applying isalnum() function. print("The given first string after applying isalnum() function:", rslt_str1) # Similarly do the same for other string and print the result string. gvn_scndstr = input("Enter some Random String = ") rslt_str2 = gvn_scndstr.isalnum() print("The above given second string is :", gvn_scndstr) print("The given second string after applying isalnum() function:", rslt_str2)
Output:
Enter some Random String = hello this is python programming platform The above given first string is : hello this is python programming platform The given first string after applying isalnum() function: False Enter some Random String = hello123 The above given second string is : hello123 The given second string after applying isalnum() function: True
Go through our tutorial and learn about various Python String Method Examples and learn how to apply the knowledge while dealing with strings.