1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 最后,我们定义一个Python工具类(PythonUtils),其中包含一个用于查找字符串在列表中位置的方法(find_string_position)。 classPythonUtils:deffind_string_position(self,lst:list,target:str)->int:forindex,iteminenumerate(lst):ifitem==target:returnindexreturn-1 1...
现在你已经可以创建类和查找函数了,我们可以这样调用它们: age_to_find=30position=find_person_by_age(people,age_to_find)ifposition!=-1:print(f"找到了,{age_to_find}岁的人位于列表索引{position}")else:print(f"未找到{age_to_find}岁的人") 1. 2. 3. 4. 5. 6. 7. 在这个示例中,我们查找...
This article mainly introduces how to find the position of an element in a list using Python, which is of great reference value and hopefully helpful to everyone. How to Find the Position of an Element in a List Problem Description Given a sequence containing n integers, determine the position...
Theindex()method is used to find the index of the first occurrence of a specified element in a list. This method is particularly useful when you need to know the position of a specific element within a list. Here’s an example of how to use theindex()method to find the index of the...
make an acronym by taking the first letter of each word in a phrase. We can do that through an operation calledstring indexing.This operation lets us access the character in a given position or index using square brackets and the number of the position we want, as the example below shows...
下面是测试结果 1...当原数组长度较少的时候...(array, position); —-> took:7 ms by copy solution took:88 ms by loop solution 从测试结果可以看出来,在执行时间上的花费 5.7K20 python 在排序数组中查找元素的第一个和最后一个位置 多种解法 二分...
list.remove(x)Remove the first item from the list whose value is equal to x. It raises a ValueError if there is no such item.从列表中移出值为x的第一个对象。如果找不到相应的对象会提供一个错误代码ValueError。list.pop([i])Remove the item at the given position in the list, and return ...
首先需要把字段值转换为字符串类型,然后使用python字符串内置函数find进行判断,具体表达式为: str(字段key).find("/")>=0 如果包含中文会报'ascii' codec can't decode byte 0 in position 0: ordinal not in range错误 可以直接使用: 字段.find('/') > -1 if 字段 != nul else false3、判断所有分录...
python position = s.find('world') # 返回子串'world'的开始索引 使用replace()方法替换字符串中的内容: python rep = s.replace('world', '世界') # 结果: "hello 世界" 字符串大小写转换 title()方法将字符串中每个单词的首字母大写,其余小写: name = 'hello world' print(name.title()) # 结果:...
Learn how to use Python's index() function to find the position of elements in lists. UpdatedMar 28, 2025·6 minread Training more people? Get your team access to the full DataCamp for business platform. In Python, adata structurehelps you organize and store data efficiently. One common an...