pythonベース--文字列

#     ，   ，    ，       
#                   ，      ，
#    python    ，      
#   ：
#                     ，
#             
name = "wangcong"
print(name[1:3]) #     
print(len(name)) #        

# in  or  not in              
print('a' in name) #      

#           
print('*' + '****') #*****
print('*' * 5) #*****

name = '*wangcong*'
print(name.strip("*")) #        
print(name.rstrip("*"))#        
print(name.lstrip("*")) #       
name = ' wangcong '
print(name.strip()) #          \t   

name = 'WANGcong'
print(name.lower()) #       ，      
print(name.upper()) #       ，      
print(name) #    name  

name = 'wangcong'
print(name.startswith('wang')) #      wang   ，       
print(name.endswith('cong')) #      cong  ，        
print(name) #    name  

# format    
people1 = "{} {} {}".format('wangcong',18,'male')
people2 = "{0} {1} {2}".format('wangcomg',18,'male')
people3 = "{name} {age} {sex}".format(sex='male',name = 'wangcong',age = 18)
print(people1,people2,people3)
print(name) #    name  

name = 'wang cong'
print(name.split()) #         ，        
print(name.split('o'))
# split           
demo  = 'a/b/c/d/e'
print(demo.split('/',1)) # ['a', 'b/c/d/e']
print(demo.split('/',2)) # ['a', 'b', 'c/d/e']
# rsplit          
print(demo.rsplit('/',1)) # ['a/b/c/d', 'e']
print(name) #    name  

# join      
name = ' '
print(name.join(['wang','cong'])) #         
#   join  +    
name = '*'
print(name.join(['w','a','n','g'])) # w*a*n*g
print(name + 'wang' + 'cong') # *wangcong
print(name) #    name  

# replace      
name = 'wang *'
print(name.replace('*','cong')) # wang cong
#          
name = 'wang *****'
print(name.replace('*','cong')) # wang congcongcongcongcong
print(name) #    name  

# find，rfind,index,rindex,count
str1 = 'hello world'
print(str1.find('l')) #      'l'    
print(str1.find('b')) #      -1
print(str1.find('l',3,5)) #      
# rfind:       
# index,rindex  find，rfind             
# count :         
print(str1.count('l',1,4)) #      ,            

#       
# \(    ）：    ；\\:   
# 
 ：   ；\t :      ;\'：   ；\"：   

#         
# %c:        ASCII 
print("%c"%89) # Y
print("%c"%'Y') #Y
# %s:      
print("%s" %"wang cong") #wang cong
# %d      
number = 87
print("%d" % number) # 87
# %u         
# %o           
print("%o" % number) # 1X27:      
# %x             （  ）
number = 15
print("%x" % number) # f
# %X             （  ）
print("%X" % number)# F