Fix errors when write files.

The python is a very versatile programming language.
The tutorial for today is about:

• check the type of variables;
• see the list error of writelines with the list output;
• fix errors for writelines;

One good example for some errors can be this:

>>> file.writelines(paragraphs)
Traceback (most recent call last):
  File "", line 1, in 
TypeError: a bytes-like object is required, not 'str'
>>> file.writelines(paragraphs.decode('utf-8'))
Traceback (most recent call last):
  File "", line 1, in 
AttributeError: 'list' object has no attribute 'decode'

Is a common issue for list and writing file.
The result of paragraphs is a list, see:

>>> type(paragraphs)

The list can be write with te writelines into the file like this:

>>> file = open("out.txt","wb")
>>> file.writelines([word.encode('utf-8') for word in paragraphs])

The file is a open file variable and the paragraphs is a list.