下面是完整的代码: string=input("请输入字符串:")element=input("请输入要删除的元素:")iflen(string)==0:print("字符串为空,无法删除元素")exit()ifelementnotinstring:print("要删除的元素不在字符串中,无法进行删除操作")exit()new_string=string.replace(element,"")print("删除元素后的字符串为:",n...
1. replace法 利用replace函数，对于字符串中的三个字符进行多次替换，不需要导入其它的包，可以一次替换...
replace(old_string, new_string) 其中: - source_string:待处理的源字符串; - old_string:被替换的旧字符串; - new_string:替换的新字符串; - replace:字符串替换方法的语法关键词。 例如,在如下字符串中,用small子串替换big子串: # coding = utf-8 # 创建一个字符串circle source_string = 'The world...
test="Python Programming"print("String: ",test)# First one character first_character=test[:1]print("First Character: ",first_character)# Last one character last_character=test[-1:]print("Last Character: ",last_character)# Everything except the first one character except_first=test[1:]print...
#print(s4[10]) #IndexError: string index out of range #获取字符串的长度:len() #遍历字符串,和list,tuple的用法完全相同,通常与for循环搭配使用 for element in s4: print(element) for index in range(0,len(s4)): print(s4[index])
以下实例展示了replace()函数的使用方法: #!/usr/bin/pythonstr="this is string example...wow!!! this is really string";printstr.replace("is","was");printstr.replace("is","was",3); 以上实例输出结果如下: thwas wasstringexample...wow!!!thwas was reallystringthwas wasstringexample...wo...
S.replace('pa','XYZ')S.isalpha(), S.isdigit() dir(S) 查看说明: help(S.replace) split 分割的应用 去掉前后空格 先去掉前后空格,再分割的过程。 >>> s.strip().split(',') ['hello','world','hao','','123'] string自带的分割
<ipython-input-92-4d08bca0998d> in <module> ---> 1 ''.join([1,2,3,4,5,'cj']) # 可迭代对象里面的元素,需要也是 isinstance(element, str) TypeError: sequence item 0: expected str instance, int found 1. 2. 3. 4. 5. 6
first element is a string of a word in the words list, and the second element is an integer representing the frequency of the word in the list. '''freq_dict =dict()forwordinwords:ifwordnotinfreq_dict: freq_dict[word] =1else: ...
for i in range(1, 30): element = 'n' + str(i) r.zadd("zset3", element, i) print(r.zrangebyscore("zset3", 15, 25)) # # 在分数是15-25之间,取出符合条件的元素 print(r.zrangebyscore("zset3", 12, 22, withscores=True)) # 在分数是12-22之间,取出符合条件的元素(带分数) 3-3 ...