Added: 9th day of learning python

String Gray Magic: The index for slicing cycle len

 

# Index, index, obtain a certain character string 
test1 = "laonanhai" 
# V = test1 [. 1] 
# Print (V) 

# slice 
# v = test1 [0: -1 ] # represents the starting value is greater than or equal 0 less than the last one (not including the last -1) 
# Print (v) 

#len python3 man is a character, python2.7 a man three characters 
test2 = "old boy" 
v1 = len (test1) 
v2 = len (test2) 
Print (v1, v2)

test = "old boy cattle B" 
COUNT = 0 
the while COUNT <len (Test): 
    V = Test [COUNT] 
    Print (V) 
    COUNT = +. 1 
#for variable name in the string 
for test1 in Test: 
    Print (test1)