Shulou(Shulou.com)06/02 Report--

This article focuses on "what are the common methods of python strings", interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn what are the common methods of python strings.

1. Find (sub [, start [, end]])

Find the string sub between indexes start and end

If found, the leftmost index value is returned. If not found,-1 is returned.

Both start and end can be omitted. Omitting start means to find it from the beginning of the string.

Omit end description to find the end of the string, omit all to find all strings

Source_str = "There is a string accessing example" print (source_str.find ('r')) > > 32, count (sub, start, end)

Returns the number of times the string sub appears between start and end

Source_str = "There is a string accessing example" print (source_str.count ('e')) > > 53, replace (old, new, count)

Old represents the character to be replaced, new represents the character to be replaced, and count represents the number of replacements (omitting means replacing all)

Source_str = "There is a string accessing example" print (source_str.replace (sep, 'iTunes, 1) > There Is a string accessing example # replaces lowercase I with uppercase I4, split (sep, maxsplit)

Slice with sep as the delimiter. If maxsplit has a specified value, only maxsplit strings are split.

After segmentation, the original str type will be converted to list type.

Source_str = "There is a string accessing example" print (source_str.split (', 3)) > ['There',' is', 'axiom,' string accessing example'] # here maxsplit=3 is specified, which means that only the first three 5, startswith (prefix, start, end) are divided.

Determine whether the string begins with prefix. Start and end represent which subscript to start with and which subscript to end.

Source_str = "There is a string accessing example" print (source_str.startswith ('There', 0,9)) > > True6, endswith (suffix, start, end)

Determine whether the string ends with suffix. If it returns True, it returns False.

Source_str = "There is a string accessing example" print (source_str.endswith ('example')) > True7, lower

Convert all uppercase characters to lowercase

8 、 upper

Convert all lowercase characters to uppercase

9 、 join

Splice a list into a string

List1 = ['ab',' cd', 'ef'] print (".join (list1)) > > ab cd ef10, slice reversal list2 =" hello "print (list2 [::-1]) > olleh so far, I believe you have a deeper understanding of the" python string commonly used methods ", might as well come to the actual operation! Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.