小编use*_*848的帖子

使用reportlab,我如何生成一系列qr代码并将它们放在一个pdf中,然后在用户浏览器上打开它.这是我的尝试.提前致谢.对于下面的代码,没有任何反应.我原本希望提示保存pdf文件.

from reportlab.pdfgen import canvas
from django.http import HttpResponse
from reportlab.graphics.shapes import Drawing 
from reportlab.graphics.barcode.qr import QrCodeWidget 
from reportlab.graphics import renderPDF
# Create the HttpResponse object with the appropriate PDF headers.
response = HttpResponse(mimetype='application/pdf')
response['Content-Disposition'] = 'attachment; filename="somefilename.pdf"'

p = canvas.Canvas(response)

qrw = QrCodeWidget('Helo World!') 
b = qrw.getBounds()

w=b[2]-b[0] 
h=b[3]-b[1] 

d = Drawing(45,45,transform=[45./w,0,0,45./h,0,0]) 
d.add(qrw)

renderPDF.draw(d, p, 1, 1)

p.showPage()
p.save()
return response

可能的重复：
在 Django 上设置 geoip 时出错

我从浏览器中收到“无法导入名称 GeoIP”错误，但在 python 终端上却没有。例如 /tmp/geo 中的地理数据。以下工作在 python 终端中进行。

    from django.contrib.gis.geoip import GeoIP
    GeoIP(path='/tmp/geo/')

但是 django 视图中的以下内容给出了错误

    from django.contrib.gis.geoip import GeoIP
    return HttpResponse (GeoIP(path='/tmp/geo/'))

任何指针都会有帮助。我正在使用 django 1.4 ，python 2.6 。这是痕迹。谢谢。

    Traceback:
    File "/usr/lib/python2.6/site-packages/django/core/handlers/base.py" in get_response
    101.                             request.path_info)
    File "/usr/lib/python2.6/site-packages/django/core/urlresolvers.py" in resolve
    300.                     sub_match = pattern.resolve(new_path)
    File "/usr/lib/python2.6/site-packages/django/core/urlresolvers.py" in resolve
    209.             return ResolverMatch(self.callback, args, kwargs, self.name)
    File "/usr/lib/python2.6/site-packages/django/core/urlresolvers.py" in callback
    216.         self._callback = get_callable(self._callback_str)
    File "/usr/lib/python2.6/site-packages/django/utils/functional.py" in wrapper
    27.         result = func(*args)
    File "/usr/lib/python2.6/site-packages/django/core/urlresolvers.py" in get_callable …