Unsupported operation :not writeable python

Question

Email validation ``` #Email validator import re def is_email(): email=input("Enter your email") pattern = '[\.\w]{1,}[@]\w+[.]\w+' file = open('ValidEmails.txt','r') if re.match(pattern, email): file.write(email) ``` I am wondering why my data wont write to the disk. Python says that my operation is not supported. ``` is_email file.write(email) io.UnsupportedOperation: not writable ```

Accepted Answer

You open the variable "file" as a read only then attempt to write to it:

```
file = open('ValidEmails.txt','r')
```

Instead, use the 'w' flag.

```
file = open('ValidEmails.txt','w')
...
file.write(email)
```

Unsupported operation :not writeable python

Solution

Problem