我将年，月和日的3个seoerate列合并到数据框的单个列中。但是年份以两位数表示，这有误。
我尝试过to_datetime()在jupyter笔记本中做同样的事情
数据框的格式如下：
Yr Mo Dy RPT VAL ROS KIL SHA BIR DUB CLA MUL CLO BEL
61 1 1 15.04 14.96 13.17 9.29 NaN 9.87 13.67 10.25 10.83 12.58 18.50
61 1 2 14.71 NaN 10.83 6.50 12.62 7.67 11.50 10.04 9.79 9.67 17.54
61 1 3 18.50 16.88 12.33 10.13 11.17 6.17 11.25 NaN 8.50 7.67 12.75
data.rename(columns={'Yr':'Year','Mo':'Month','Dy':'Day'},inplace=True)
data['Date']=pd.to_datetime(data[['Year','Month','Day']],format='%y%m%d')
我得到的错误是：
无法组合日期时间：时间数据610101与格式'％Y％m％d'（匹配）不匹配
答案 0 :(得分：1)
指定列Father的问题public class Father {
private String x;
protected Father(String x) {
this.x = x;
System.out.println(this);
System.out.println(this.x);
}
public Father() {
this("Father");
}
// Rest of father's code, without the init method
}
public class Son extends Father {
public Son() {
super("Son");
}
// Rest of son's code, without the init method
}
需要.green { background: green; color: white; }
.white { background: white; color: black; }
#sales-list { border: 1px solid black; }
td { padding: 10px; border: 1px solid black; }
格式，因此需要替代解决方案，因为年份仅<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
<title>Untitled 3</title>
<link rel="stylesheet" type="text/css" href="Untitled_1.css"/>
</head>
<body>
<script type="text/javascript">
var cells = document.querySelectorAll("td");
for (var i = 0; i < cells.length; i++) {
cells[i].addEventListener("click", function() {
this.className= this.className == "white" ? "green" : "white";
});
}
document.write("Number of green cells: ")
</script>
<table id="sales-list">
<tr>
<td class="white">TEST1</td>
<td class="white">TEST2</td>
<td class="white">TEST3</td>
</tr>
</table>
</body>
</html>
：
to_datetime