Python String isascii() Method with Examples

Python / By

String isascii() Method in Python:

If all of the characters are ASCII, the isascii() method returns True (a-z). Otherwise returns False.

Syntax: 

string.isascii()

Parameters: This method has no parameters.

Examples:

Example1:

Input:

Given string = "hello@%btechgeeks670"

Output:

True

Example2:

Input:

Given string = 'ß'

Output:

False

String isascii() Method with Examples in Python

Method #1: Using Built-in Functions (Static Input)

Approach:

  • Give the string as static input and store it in a variable.
  • Apply isascii() method on the given string where if all of the characters are ASCII, the isascii() method returns True (a-z). Otherwise returns False.
  • Store it in a variable.
  • Print the result after applying isascii() method on the given string.
  • The Exit of the Program.

Below is the implementation:

# Give the string as static input and store it in a variable.
gvn_str = "btechgeeks789@"
# Apply isascii() method on the given string where if all of the characters are
# ASCII, the isascii() method returns True (a-z). Otherwise returns False.
# Store it in a variable.
rslt = gvn_str.isascii()
# Print the result after applying isascii() method on the given string.
print(rslt)

Output:

True

For any non-ASCII characters, the isascii() method returns False.

For Example:

# A letter in German
gvn_str = 'ß'
print(gvn_str.isascii())

gvn_str = 'õ'
print(gvn_str.isascii())

gvn_str = 'Å'
print(gvn_str.isascii())

Output:

False
False
False

The isascii() method also verifies ASCII Unicode characters.

For Example:

gvn_str = '/u0000' # Null Unicode
print(gvn_str.isascii())

gvn_str = '/u007f' # DEL Unicode
print(gvn_str.isascii())

gvn_str = '/u0041' # A's Unicode
print(gvn_str.isascii())

gvn_str = '/u0061'  # a's Unicode
print(gvn_str.isascii())

Output:

True
True
True
True

Method #2: Using Built-in Functions (User Input)

Approach:

  • Give the string as user input using the input() function and store it in a variable.
  • Apply isascii() method on the given string where if all of the characters are ASCII, the isascii() method returns True (a-z). Otherwise returns False.
  • Store it in a variable.
  • Print the result after applying isascii() method on the given string.
  • The Exit of the Program.

Below is the implementation:

# Give the string as user input using the input() function and store it in a variable.
gvn_str = input("Enter some random string = ")
# Apply isascii() method on the given string where if all of the characters are
# ASCII, the isascii() method returns True (a-z). Otherwise returns False.
# Store it in a variable.
rslt = gvn_str.isascii()
# Print the result after applying isascii() method on the given string.
print(rslt)

Output:

Enter some random string = hello@%btechgeeks670
True