Question

如何从python 3的字符串中提取日期？

首先要查找具有日期的子字符串如果找到，则拆分元素

import re
test_list = [["4","list1",'FEE(DR09/01/2019', '1', '13.50'],
["9","list2",'FEE11/01/2019','45.00', '105.00', '0.00', '105.00'],
["7","list3",'2-BED ROOM (09/01/2019 -', '09/01/2019)', '1', '150.00']] 

    subs = r"\d{1,2}/\d{1,2}/\d{4}"
l=[]
for x in test_list:
    for item in x:
        if re.search(subs, item):
            l.append(item)
print(l)

预期输出：

[["4","list1","FEE(DR","09/01/2019", '1', '13.50'],
["9","list2",'FEE','11/01/2019','45.00', '105.00', '0.00', '105.00'],
["7","list3",'2-BED ROOM ( ','09/01/2019',' -', '09/01/2019',')', '1', 
'150.00']]

Answer 1

对捕获组使用QSqlDatabase db1 = QSqlDatabase::addDatabase( "QMYSQL" ); db1.setHostName("127.0.0.1"); db1.setPort(8080); db1.setDatabaseName( "sample" ); db1.setUserName( "root" ); db1.setPassword( "" ); if( !db1.open() ) { qDebug() << db1.lastError(); qFatal( "Failed to connect." ); } qDebug( "Connected!" );：

re.split

输出：

import re
test_list = [["4","list1",'FEE(DR09/01/2019', '1', '13.50'],
["9","list2",'FEE11/01/2019','45.00', '105.00', '0.00', '105.00'],
["7","list3",'2-BED ROOM (09/01/2019 -', '09/01/2019)', '1', '150.00']] 

subs = r"(\d{1,2}/\d{1,2}/\d{4})"

res = []
for l in test_list:
    sub = []
    for s in l:
        sub.extend([i for i in re.split(subs, s) if i])
    res.append(sub)
print(res)

Answer 2

这仅适用于您的特定情况

...
for element in test_list:
    for index in range(len(element[2])): 
        if ord(element[2][index]) > 47 and ord(element[2][index]) < 52:
           element.insert(3,element[2][index:]
           element[2] = element[2][:index] 
           if len(element[3]) > 10:
               element.insert(4,element[3][10:])
               element[3] = element[2][:10]
           break          
...

但是如果您想要从字符串中获取日期的函数，请在函数中放置第二个

Answer 3

使用python3提取给定字符串中的日期：

通过以下代码：

java.lang.InterruptedException
    at java.lang.Object.wait(Native Method)
    at hudson.model.Computer.waitUntilOnline(Computer.java:1560)
    ...

输入：猴子2010-07-10爱香蕉

输出：2010-07-10

如何从字符串python 3中提取日期？

3 个答案: