deffind_second_occurrence(text,substring):first_occurrence=text.find(substring)iffirst_occurrence==-1:return-1# 如果未找到,返回 -1second_occurrence=text.find(substring,first_occurrence+len(substring))returnsecond_occurrence text="Python is great. I love Python programming."position=find_second_occurre...
deffind_second_occurrence(string,substring):first_index=string.find(substring)iffirst_index==-1:return-1# 第一次出现都没有,返回-1# 从第一次出现的位置向后查找second_index=string.find(substring,first_index+len(substring))returnsecond_index 1. 2. 3. 4. 5. 6. 7. 8. 在这个函数中,我们首...
Here we search for a substring from the 15th character until the end of the string. We find the second occurrence of the substring. The line prints 35. print(a.rfind("wolf")) Therfindlooks for a substring from the end. It finds the second occurrence of the 'wolf' substring. The line...
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...
4. How do I find a specific string in Python? To find a specific string in a list in Python, you can use theindex()method to find the index of the first occurrence of the string in the list. For example: my_list=["apple","banana","cherry"]try:index=my_list.index("banana")pri...
The find() method returns the index number of the first occurrence of the given search term in the specified string. find() returns -1 if.
# You can find the length of a string len("This is a string") # => 16 我们可以在字符串前面加上f表示格式操作,并且在格式操作当中也支持运算。不过要注意,只有Python3.6以上的版本支持f操作。 # You can also format using f-strings or formatted string literals (in Python 3.6+) ...
50. Split string on last delimiter occurrence. Write a Python program to split a string on the last occurrence of the delimiter. Click me to see the sample solution 51. Find first non-repeating character. Write a Python program to find the first non-repeating character in a given string....
Basic String 基本字符串 Geodesy 大地测量学 Haversine Distance 半正弦距离 Lamberts Ellipsoidal ...
# A string can be treated like a list of characters "This is a string"[0] # => 'T' # You can find the length of a string len("This is a string") # => 16 我们可以在字符串前面加上f表示格式操作,并且在格式操作当中也支持运算,比如可以嵌套上len函数等。不过要注意,只有Python3.6以上...