【原创】python 比较两个版本号大小_python 比较5.0和5.8大小-优快云博客

本文链接：https://blog.youkuaiyun.com/peiwang245/article/details/82694604

本文介绍了一个使用Python编写的版本号比较函数，通过正则表达式验证版本号格式，并将其转换为数组进行逐位比较，实现了对不同格式版本号的大小比较。

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【原创】python 比较两个版本号大小

                # -*- coding: utf-8 -*-
               

                __author__ 
                = 
                'ypp'
               

                 
               

                import 
                re
               

                 
               

                def 
                versionCompare(v1
                =
                "1.1.1"
                , v2
                =
                "1.2"
                ):
               

                    
                v1_check 
                = 
                re.match(
                "\d+(\.\d+){0,2}"
                , v1)
               

                    
                v2_check 
                = 
                re.match(
                "\d+(\.\d+){0,2}"
                , v2)
               

                    
                if 
                v1_check 
                is 
                None 
                or 
                v2_check 
                is 
                None 
                or 
                v1_check.group() !
                = 
                v1 
                or 
                v2_check.group() !
                = 
                v2:
               

                        
                return 
                "版本号格式不对，正确的应该是x.x.x,只能有3段"
               

                    
                v1_list 
                = 
                v1.split(
                "."
                )
               

                    
                v2_list 
                = 
                v2.split(
                "."
                )
               

                    
                v1_len 
                = 
                len
                (v1_list)
               

                    
                v2_len 
                = 
                len
                (v2_list)
               

                    
                if 
                v1_len > v2_len:
               

                        
                for 
                i 
                in 
                range
                (v1_len 
                - 
                v2_len):
               

                            
                v2_list.append(
                "0"
                )
               

                    
                elif 
                v2_len > v1_len:
               

                        
                for 
                i 
                in 
                range
                (v2_len 
                - 
                v1_len):
               

                            
                v1_list.append(
                "0"
                )
               

                    
                else
                :
               

                        
                pass
               

                    
                for 
                i 
                in 
                range
                (
                len
                (v1_list)):
               

                        
                if 
                int
                (v1_list[i]) > 
                int
                (v2_list[i]):
               

                            
                return 
                "v1大"
               

                        
                if 
                int
                (v1_list[i]) < 
                int
                (v2_list[i]):
               

                            
                return 
                "v2大"
               

                    
                return 
                "相等"
               

                 
               

                # 测试用例
               

                print
                (versionCompare(v1
                =
                "
                ", v2="
                ")) 
               

                print
                (versionCompare(v1
                =
                "1.0.a"
                , v2
                =
                "d.0.1"
                ))
               

                print
                (versionCompare(v1
                =
                "1.0.1"
                , v2
                =
                "1.0.1"
                ))
               

                print
                (versionCompare(v1
                =
                "1.0.2"
                , v2
                =
                "1.0.1"
                ))
               

                print
                (versionCompare(v1
                =
                "1.0.1"
                , v2
                =
                "1.0.2"
                ))
               

                print
                (versionCompare(v1
                =
                "1.0.11"
                , v2
                =
                "1.0.2"
                ))
               