As long as the middle separated by spaces or special characters, numbers, special characters also
Add up to a total of 20
Six intermediate spaces, there are \ t 8 added to the foregoing, every 8-bit fill
Public methods:
The results: 
len () method of calculation is character
RESULTS: 
with slices similar to care regardless of the end, "alex" as a whole
Is the slice (2,5) take less than 5
"WU" is a whole, returns the index
Find general use
Space can be considered an element
"Al" is also a whole, count can also be sliced
split by spaces by default do segmentation, str converted to a list
The second is based on the index
replace: replace all default
The for loop is a limited circulation, while circulation belongs to an infinite loop