How to use the split() function in Python 2.x to split a string according to the specified delimiter

How to use the split() function in Python 2.x to split a string according to a specified delimiter

In Python string processing, we often encounter the need to split a string according to a specific delimiter. delimiter for splitting. Python provides the split() function to achieve this requirement. This article will introduce how to use the split() function to split a string according to the specified delimiter.

The split() function is a built-in function of Python strings, used to split the string according to the specified delimiter. The syntax is as follows:

str.split(sep=None, maxsplit=-1)

where sep is an optional separator parameter, and the default value is None. If you do not specify a separator, the function will split the string based on spaces and tabs.
maxsplit is an optional parameter used to specify the maximum number of splits of the string. When maxsplit or maxsplit=-1 is not specified, the function splits the entire string.

The following is some sample code using the split() function to illustrate how to split strings according to different delimiters.

1. Use spaces to split strings

str1 = "Hello World! This is Python!"
result = str1.split()
print(result)

Run the above code, the output result is:

['Hello', 'World!', 'This', 'is', 'Python!']

When the delimiter is not specified, the function defaults Use spaces to separate.

2. Use commas to split strings

str2 = "apple, banana, orange, pineapple"
result = str2.split(",")
print(result)

Run the above code, the output result is:

['apple', ' banana', ' orange', ' pineapple']

The function splits the string into multiple sub-strings based on commas string.

3. Custom separator

str3 = "What|is|your|name?"
result = str3.split("|")
print(result)

Run the above code, the output result is:

['What', 'is', 'your', 'name?']

The function uses vertical bars| as The delimiter separates the string.

4. Specify the maximum number of splits

str4 = "I want to learn Python programming."
result = str4.split(" ", 3)
print(result)

Run the above code, the output result is:

['I', 'want', 'to', 'learn Python programming.']

The function splits the string according to spaces, but It can only be split up to 3 times.

Summary:
This article introduces how to use the split() function in Python 2.x to split a string according to the specified delimiter. Depending on actual needs, we can use different delimiters and specify the maximum number of splits. The split() function is very convenient and can quickly handle the problem of string splitting, making program development more efficient and flexible.

By studying this article, I believe that readers have mastered the basic usage of the split() function in Python 2.x and can flexibly use it in actual projects. I hope this article will be helpful to your study and work!

The above is the detailed content of How to use the split() function in Python 2.x to split a string according to the specified delimiter. For more information, please follow other related articles on the PHP Chinese website!