1 string formatting operation
Format% variable #Format is the style of format, Variable is a variable to be formatted]
Format has the following forms
% O
# Convert numeric values to octal
% x
# Convert numeric to hex
% D # integer conversion symbol
% s
# String conversion symbol
as follows:
>>> '% o'% 100
'144'
>>> '% # o'% 100 # Add a "#" number to output standard 8-based number or 16-based number
'0144'
# Single precision conversion
>>> '% .2f'% 3.235412 # .2 indicates that the two decisions are retained.
'3.24'
>>> PI = 3.1415926
>>> '% .2f'% pi # .2f does not include decumeration
'3.14'
>>> '% .2g'% pi # .2G is included in a small number
'3.1'
Original character operator "R" or "r"
>>> Print 'Hell', '/ NWROLD'
Hell
Wrold
>>> Print 'Hello', R '/ NWrOLD' #Print 'Hello', R '/ NWROLD'
Hello / NWROLD
>>>
2 Several built-in functions of the string
1 CMP (M, N) compares the size of M and N, and the m is returned to 1, and the M is returned to -1, and it will return to 0.
>>> a = 'a'
>>> b = 'b'
>>> PRINT CMP (A, B)
-1
2 look for maximum characters in strings and minimum characters max (), min ()
>>> Max ('Abcdef')
'f'
>>> MIN ('Abcdef')
'a'
3 string module
1 Find (strs, strd, m, n) lookup string STRD start position in STRS, m is the location where the lookup is started, n is the termination position
>>> Import String
>>> a = 'www.slssoft.com'
>>> B = 'SLS'
>>> Print String.Find (a, b) #default is found from the beginning
4
>>> Print String.Find (A, B, 2) # From the second place
4
>>> Print String.Find (A, B, 2, 5) # 第 位 5 位 5
-1
2 string.uppercase # 包涵 all uppercase letters
String.Lowercase # inclusted all lowercase letters
String.digits # incubated all numbers
For example, look up a string is all uppercase letters
DEF Isupper (STR):
IMPORT STRING
Temp = ''
For Temp in Str:
if string.find (String.Uppercase, Temp) == -1:
Return False
Return True
There is also a method:
>>> Print 'a' <= 'c' <= 'Z'true
