table of Contents
String
序列:序号 列
012345678
索引
序列类型,就是带有索引的数据类型:字符串/列表/元祖
name = 'wuhao dsb'
# 012345678
name3 = name[0]
name2 = name[6:]
# 字符串/列表/元组共有方法
# 长度
print('len(name):',len(name))
print('wo' in name)
print('w' not in name)
for i in name:
print(i)
#
List
# 列表
# 中括号内用都好隔开多个元素
lt = ['nick','handsome','wuhao','beautiful',1,1,1,1]
print(lt)
s = set(lt)# 列表可以用集合去重
lt = list(s)
print(lt)
A list of built-in method
# 列表的内置方法
lt = ['nick','handsome','wuhao','beautiful',1,1,1,1]
lt.append('yongjiu guzhang')
print(lt)
print('*'*50)
del lt[0] # 按照索引删除
print(lt)
print('*'*50)
print(lt)
lt.pop(0)
print(lt)
print('*'*50)
lt2 = lt.copy()
print(lt2)
print('*'*50)
# 翻转
lt.reverse()
print(lt)
print('*'*50)
# 排序
lt3 = [1,3,2,100,4,5]
lt3.sort()
print(lt3)
print('*'*50)
# 清除
lt4=lt3.clear()
print(lt4)
Tuple
# 元组# # 元组就是把列表的中括号换成小括号,然后他没有内置方法lt = [1,3,2,100,4,5]
# 只可取不可更改
tu = (1,3,2,100,4,5)
print(tu[0])
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