我有一列日期时间为UTC日期
2020-01-01 00:00:00+00:00
有人可以帮我将其转换为datetime64，例如：
2020-01-01
答案 0 :(得分：1)
如果您使用熊猫（似乎是这种情况），则可以这样更改：
df.dates.apply(lambda x: x.date()) # where dates is your datetime column
答案 1 :(得分：0)
使用Python 3.2+尝试private void btnTestDate_Click(object sender, EventArgs e)
{
string sFile = "C:\\temp\\ExcelWithDate.xlsx";
if (File.Exists(sFile)) {
File.Delete(sFile);
}
try {
using (SpreadsheetDocument xl = SpreadsheetDocument.Create(sFile, SpreadsheetDocumentType.Workbook)) {
WorkbookPart wbp = xl.AddWorkbookPart();
WorksheetPart wsp = wbp.AddNewPart<WorksheetPart>();
Workbook wb = new Workbook();
FileVersion fv = new FileVersion();
fv.ApplicationName = "Microsoft Office Excel";
Worksheet ws = new Worksheet();
SheetData sd = new SheetData();
WorkbookStylesPart wbsp = wbp.AddNewPart<WorkbookStylesPart>();
wbsp.Stylesheet = CreateStylesheetForDate();
wbsp.Stylesheet.Save();
Columns columns = new Columns();
columns.Append(CreateColumnData(1, 1, 30));
columns.Append(CreateColumnData(2, 4, 23.5703125));
columns.Append(CreateColumnData(6, 6, 6.5703125));
ws.Append(columns);
Row r;
Cell c;
// content
r = new Row();
c = new Cell();
c.DataType = CellValues.String;
c.CellValue = new CellValue("PROD12345");
r.Append(c);
sd.Append(r);
// date
r = new Row();
c = new Cell();
c.DataType = CellValues.Date;
c.StyleIndex = 1;
c.CellValue = new CellValue(DateTime.Now.ToOADate().ToString(new CultureInfo("en-US")));
//c.CellValue = new CellValue(DateTime.Now.ToOADate().ToString());
//c.CellValue = new CellValue(DateTime.Now.ToOADate().ToString().Replace(".", ","));
r.Append(c);
sd.Append(r);
ws.Append(sd);
wsp.Worksheet = ws;
wsp.Worksheet.Save();
Sheets sheets = new Sheets();
Sheet sheet = new Sheet();
sheet.Name = "Sheet1";
sheet.SheetId = 1;
sheet.Id = wbp.GetIdOfPart(wsp);
sheets.Append(sheet);
wb.Append(fv);
wb.Append(sheets);
xl.WorkbookPart.Workbook = wb;
xl.WorkbookPart.Workbook.Save();
xl.Close();
}
} catch (Exception ex) {
Console.WriteLine(ex.ToString());
Console.ReadLine();
}
}
private static Stylesheet CreateStylesheetForDate() {
Stylesheet ss = new Stylesheet();
Fonts fts = new Fonts();
DocumentFormat.OpenXml.Spreadsheet.Font ft = new DocumentFormat.OpenXml.Spreadsheet.Font();
FontName ftn = new FontName();
ftn.Val = "Calibri";
FontSize ftsz = new FontSize();
ftsz.Val = 11;
ft.FontName = ftn;
ft.FontSize = ftsz;
fts.Append(ft);
fts.Count = (uint)fts.ChildElements.Count;
Fills fills = new Fills();
Fill fill;
PatternFill patternFill;
fill = new Fill();
patternFill = new PatternFill();
patternFill.PatternType = PatternValues.None;
fill.PatternFill = patternFill;
fills.Append(fill);
fills.Count = (uint)fills.ChildElements.Count;
Borders borders = new Borders();
Border border = new Border();
border.LeftBorder = new LeftBorder();
border.RightBorder = new RightBorder();
border.TopBorder = new TopBorder();
border.BottomBorder = new BottomBorder();
border.DiagonalBorder = new DiagonalBorder();
borders.Append(border);
borders.Count = (uint)borders.ChildElements.Count;
CellStyleFormats csfs = new CellStyleFormats();
CellFormat cf = new CellFormat();
cf.NumberFormatId = 0;
cf.FontId = 0;
cf.FillId = 0;
cf.BorderId = 0;
csfs.Append(cf);
csfs.Count = (uint)csfs.ChildElements.Count;
uint iExcelIndex = 164;
NumberingFormats nfs = new NumberingFormats();
CellFormats cfs = new CellFormats();
cf = new CellFormat();
cf.NumberFormatId = 0;
cf.FontId = 0;
cf.FillId = 0;
cf.BorderId = 0;
cf.FormatId = 0;
cfs.Append(cf);
NumberingFormat nf;
nf = new NumberingFormat();
nf.NumberFormatId = iExcelIndex++;
nf.FormatCode = "dd/mm/yyyy";
nfs.Append(nf);
cf = new CellFormat();
cf.NumberFormatId = nf.NumberFormatId;
cf.FontId = 0;
cf.FillId = 0;
cf.BorderId = 0;
cf.FormatId = 0;
cf.ApplyNumberFormat = true;
cfs.Append(cf);
nfs.Count = (uint)nfs.ChildElements.Count;
cfs.Count = (uint)cfs.ChildElements.Count;
ss.Append(nfs);
ss.Append(fts);
ss.Append(fills);
ss.Append(borders);
ss.Append(csfs);
ss.Append(cfs);
CellStyles css = new CellStyles();
CellStyle cs = new CellStyle();
cs.Name = "Normal";
cs.FormatId = 0;
cs.BuiltinId = 0;
css.Append(cs);
css.Count = (uint)css.ChildElements.Count;
ss.Append(css);
DifferentialFormats dfs = new DifferentialFormats();
dfs.Count = 0;
ss.Append(dfs);
TableStyles tss = new TableStyles();
tss.Count = 0;
tss.DefaultTableStyle = "TableStyleMedium9";
tss.DefaultPivotStyle = "PivotStyleLight16";
ss.Append(tss);
return ss;
}
软件包。
datetime