In this program, we will be taking a password as a combination of alphanumeric characters along with special characters, and check whether the password is valid or not with the help of few conditions.
Primary conditions for password validation :
- Minimum 8 characters.
- The alphabets must be between [a-z]
- At least one alphabet should be of Upper Case [A-Z]
- At least 1 number or digit between [0-9].
- At least 1 character from [ _ or @ or $ ].
Input : R@m@_f0rtu9e$ Output : Valid Password Input : Rama_fortune$ Output : Invalid Password Explanation: Number is missing Input : Rama#fortu9e Output : Invalid Password Explanation: Must consist from _ or @ or $
Here we have used the re module that provide support for regular expressions in Python. Along with this the re.search() method returns False (if the first parameter is not found in the second parameter) This method is best suited for testing a regular expression more than extracting data. We have used the re.search() to check the validation of alphabets, digits or special characters. To check for white spaces we use the “\s” which comes in the module of the regular expression.
- Python | Program to generate one-time password (OTP)
- Password validation in Python
- Generating Strong Password using Python
- getpass() and getuser() in Python (Password without echo)
- Python | Random Password Generator using Tkinter
- Python program to check if a given string is Keyword or not
- Python program to check if given string is pangram
- Python program to check if string is empty or not
- Python program to check if a string is palindrome or not
- Python program to check whether a number is Prime or not
- Python program to check if number is palindrome (one-liner)
- Python program to check if given value occurs atleast k times
- Python | Prompt for Password at Runtime and Termination with Error Message
- Python List Equality | Program to check if two given matrices are identical
- Dunn index and DB index - Cluster Validity indices | Set 1
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to email@example.com. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.