Source code for

# -*- coding: utf-8 -*-
from __future__ import division, print_function, absolute_import

import locale

from petl.compat import izip_longest, next, xrange, BytesIO
from petl.util.base import Table
from import read_source_from_arg, write_source_from_arg

[docs]def fromxls(filename, sheet=None, use_view=True, **kwargs): """ Extract a table from a sheet in an Excel .xls file. Sheet is identified by its name or index number. N.B., the sheet name is case sensitive. """ return XLSView(filename, sheet=sheet, use_view=use_view, **kwargs)
class XLSView(Table): def __init__(self, filename, sheet=None, use_view=True, **kwargs): self.filename = filename self.sheet = sheet self.use_view = use_view self.kwargs = kwargs def __iter__(self): # prefer implementation using xlutils.view as dates are automatically # converted if self.use_view: from import xlutils_view source = read_source_from_arg(self.filename) with'rb') as source2: source3 = wb = xlutils_view.View(source3) if self.sheet is None: ws = wb[0] else: ws = wb[self.sheet] for row in ws: yield tuple(row) else: import xlrd source = read_source_from_arg(self.filename) with'rb') as source2: source3 = with xlrd.open_workbook(file_contents=source3, on_demand=True, **self.kwargs) as wb: if self.sheet is None: ws = wb.sheet_by_index(0) elif isinstance(self.sheet, int): ws = wb.sheet_by_index(self.sheet) else: ws = wb.sheet_by_name(str(self.sheet)) for rownum in xrange(ws.nrows): yield tuple(ws.row_values(rownum))
[docs]def toxls(tbl, filename, sheet, encoding=None, style_compression=0, styles=None): """ Write a table to a new Excel .xls file. """ import xlwt if encoding is None: encoding = locale.getpreferredencoding() wb = xlwt.Workbook(encoding=encoding, style_compression=style_compression) ws = wb.add_sheet(sheet) if styles is None: # simple version, don't worry about styles for r, row in enumerate(tbl): for c, v in enumerate(row): ws.write(r, c, label=v) else: # handle styles it = iter(tbl) hdr = next(it) flds = list(map(str, hdr)) for c, f in enumerate(flds): ws.write(0, c, label=f) if f not in styles or styles[f] is None: styles[f] = xlwt.Style.default_style # convert to list for easy zipping styles = [styles[f] for f in flds] for r, row in enumerate(it): for c, (v, style) in enumerate(izip_longest(row, styles, fillvalue=None)): ws.write(r+1, c, label=v, style=style) target = write_source_from_arg(filename) with'wb') as target2:
Table.toxls = toxls