What is the function of function COUNT() in python

The function of the function COUNT() in python is to count the number of times a certain character appears in a string. The syntax is [str.count("char", start,end)], where str is the character to be counted. , star is the starting position of the index string, and end is the end position of the index string.

count() function

Description: Count the number of times a certain character appears in a string. You can select the starting and ending positions of the string index.

Syntax: str.count("char", start,end) or str.count("char") -> int Returns an integer

• str —— is the character to be counted (can be a single character or multiple characters).

• star - is the starting position of the index string, the default parameter is 0.

• end - is the end position of the index string. The default parameter is the string length, which is len(str).

Program example:

str = "i love python,i am learning python"
print(str.count("i")) #star 和end 为默认参数
print(str.count("i",2)) # star值为2，end值为默认参数
print(str.count("i",2,5)) #star值为2，end值为5
print(str.count("am"))  #多字符统计

Program running result:

3
2
0
1

Related free learning recommendations: python video tutorial

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