标签:replace extend python 修改 upper str none 索引 false
##################################################整理###########################################
PS : 如下必掌握
# 1 数字
# int(..)
# 2 字符串
# replace /find /join /strip /startwith /split /upper /lower /format
# 格式化方法一:
template = "i am {name},age : {age}"
v = template.format(name = "ZZX",age = "19")
print(v)
#格式化方法二:
template = "i am {name},age : {age}"
v = template.format(**{"name":"ZZX","age":"19"})
print(v)
#三,列表
# append,extend,insert
#索引,切片,循环
#四,元组
#忽略
#索引,切片,循环, 一级元素不可被修改
#五,字典
#ger/update/keys/values/items
#索引
dic = {
"k1":"v1"
}
v1 = "k1" in dic.keys()
print(v1)
v1 = "v1" in dic.values()
print(v1)
#六 布尔值
# bool(..)
# None "" () [] {} 0 ==> False
# bool([]) bool(()) bool("")... ==>False
标签:replace extend python 修改 upper str none 索引 false
原文地址:https://www.cnblogs.com/159357zzx/p/11588428.html