The **`base64.standard_b64decode()` method** decodes an encoded bytes-like object into its original byte string using Base64 alphabets.

# Syntax

We can import `standard_b64decode` from `base64` using the following code:
```python
from base64 import standard_b64decode
```

The declaration of the `base64.standard_b64decode()` method is as follows:
```python
base64.standard_b64decode(b_string)
```

The method returns the decoded byte-string.

# Code
The code below demonstrates the use of `base64.standard_b64decode()`:

from base64 import standard_b64encode
from base64 import standard_b64decode
  
b_str = b'Welcome to Educative!'
print('Data type of \'s\': ', type(b_str))

enc_str = standard_b64encode(b_str)    # encode
dec_str = standard_b64decode(enc_str)    # decode
print('Data type of decoded \'dec_str\': ', type(dec_str))

print('Decoded string: ', dec_str)

## Explanation
In *line 4*, a byte string is initialized and stored in `b_str`. The next line prints the type of `b_str`. In *line 7*, the string is encoded, then in *line 8*, the string is decoded, and finally *line 9* prints the type of the encoded string. Lastly, in *line 11*, the encoded string is printed.


What is base64.standard_b64decode(s) in Python?

The base64.standard_b64decode() method decodes a Base64 encoded bytes-like object back to its original byte string.