def create():
totp_ = totp.TOTP(random_base32())
outn = BytesIO()
img = make(totp_.provisioning_uri("*****@*****.**",issuer_name = "Cinara-Lyca Network Co.LTD"))
img.save(outn)
data = standard_b64encode(outn.getvalue())
data_uri = "data:image/png;base64," + data.decode()
return jsonify({"qr_code_url":data_uri,"auth_vendor_id":totp_.secret})
def get(self, request, transaction_number, challan_number):
r = requests.get(url=SALES_TRANSACTION,
params={'transaction_number': transaction_number})
if r.status_code is 200:
json_data = r.json()
if hasUpdatePurchaseRecordAccess(request.user):
item_list = json.loads(requests.get(SALES_ITEM_LIST).text)
uom = json.loads(requests.get(UNIT_OF_MEASURE).text)
po_line_statuses = json.loads(
requests.get(PURCHASE_ORDER_LINES_STATUS).text)
po_header_statuses = json.loads(
requests.get(PURCHASE_ORDER_HEADER_STATUS).text)
po_type = json.loads(requests.get(PURCHASE_ORDER_TYPE).text)
supplier_list = json.loads(requests.get(SUPPLIER_LIST).text)
data = {
'user':
request.user.username,
'po_type':
po_type['purchaseOrderType'],
'supplier_list':
supplier_list['supplierLists'],
'item_list':
item_list['itemDetailsList'],
'uom':
uom['UnitOfMeasure'],
'header_status':
po_header_statuses['purchaseOrderHeaderStatus'],
'line_status':
po_line_statuses['purchaseOrderLineStatus'],
'details':
json_data['sales_trx_details'][0]
}
template = jinja_template.get_template(
'pdf-templates/sales-challan.html')
html = template.render(request, data=data)
response = BytesIO()
pdf = pisa.pisaDocument(BytesIO(html.encode("ISO-8859-1")),
response)
if not pdf.err:
resp = HttpResponse(response.getvalue(),
content_type='application/pdf')
resp[
'Content-Disposition'] = 'attachment; filename="SalesChallan.pdf"'
return resp
else:
return HttpResponse("Error Rendering PDF", status=400)
else:
template = jinja_template.get_template(
'sales/sales-line-view.html')
return HttpResponse(
template.render(request,
data=json_data['purchase_trx_details'][0]))
else:
template = jinja_template.get_template(
'internal_server_error.html')
return HttpResponse(template.render(request))
def get(self, request, *args, **kwargs):
data = request.query_params.copy()
device = app_device(request)
if not device:
device = data.get('username', '')
f = BytesIO()
img, code = check_code.create_validate_code()
DeivceVcode.objects.update_or_create(device=device,
defaults={'vcode': upper(code)})
img.save(f, 'GIF')
return HttpResponse(f.getvalue(), content_type='image/gif')
def test4atom_no_match_missing_value_string_set(self):
"""
This test case sets up a set of values, which are all expected to be matched.
The missing value string is set to a value, so when a string does not match this value is used instead.
"""
description = "Test4MatchValueStreamWriter"
output_stream = BytesIO()
match_context = MatchContext(
b'25537Euro 25538Euro 25539Euro 25540Pfund ')
decimal_integer_value_me = DecimalIntegerValueModelElement(
'd1', DecimalIntegerValueModelElement.SIGN_TYPE_NONE,
DecimalIntegerValueModelElement.PAD_TYPE_NONE)
fixed_dme = FixedDataModelElement('s1', self.euro)
sequence_model_element = SequenceModelElement(
'sequence', [decimal_integer_value_me, fixed_dme])
match_value_stream_writer = MatchValueStreamWriter(
output_stream, [self.match_sequence_d1, self.match_sequence_s1],
b';', b'-')
self.analysis_context.register_component(match_value_stream_writer,
description)
match_element = sequence_model_element.get_match_element(
'match', match_context)
log_atom = LogAtom(match_context.match_data,
ParserMatch(match_element), 1,
match_value_stream_writer)
match_value_stream_writer.receive_atom(log_atom)
match_element = sequence_model_element.get_match_element(
'match', match_context)
log_atom = LogAtom(match_context.match_data,
ParserMatch(match_element), 1,
match_value_stream_writer)
match_value_stream_writer.receive_atom(log_atom)
match_element = sequence_model_element.get_match_element(
'match', match_context)
log_atom = LogAtom(match_context.match_data,
ParserMatch(match_element), 1,
match_value_stream_writer)
match_value_stream_writer.receive_atom(log_atom)
match_element = decimal_integer_value_me.get_match_element(
'match', match_context)
match_element.path = self.match_sequence_d1
log_atom = LogAtom(match_context.match_data,
ParserMatch(match_element), 1,
match_value_stream_writer)
match_value_stream_writer.receive_atom(log_atom)
self.assertEqual(output_stream.getvalue().decode(),
'25537;Euro \n25538;Euro \n25539;Euro \n25540;-\n')
def test2all_atoms_match_no_seperator(self):
"""
This test case sets up a set of values, which are all expected to be matched.
The seperator string is None, so all values are expected to be one string.
"""
description = "Test2MatchValueStreamWriter"
output_stream = BytesIO()
match_context = MatchContext(
b'25537Euro 25538Euro 25539Euro 25540Euro ')
decimal_integer_value_me = DecimalIntegerValueModelElement(
'd1', DecimalIntegerValueModelElement.SIGN_TYPE_NONE,
DecimalIntegerValueModelElement.PAD_TYPE_NONE)
fixed_dme = FixedDataModelElement('s1', self.euro)
sequence_model_element = SequenceModelElement(
'sequence', [decimal_integer_value_me, fixed_dme])
match_value_stream_writer = MatchValueStreamWriter(
output_stream, [self.match_sequence_d1, self.match_sequence_s1],
b'', b'-')
self.analysis_context.register_component(match_value_stream_writer,
description)
match_element = sequence_model_element.get_match_element(
'match', match_context)
log_atom = LogAtom(match_context.match_data,
ParserMatch(match_element), 1,
match_value_stream_writer)
match_value_stream_writer.receive_atom(log_atom)
match_element = sequence_model_element.get_match_element(
'match', match_context)
log_atom = LogAtom(match_context.match_data,
ParserMatch(match_element), 1,
match_value_stream_writer)
match_value_stream_writer.receive_atom(log_atom)
match_element = sequence_model_element.get_match_element(
'match', match_context)
log_atom = LogAtom(match_context.match_data,
ParserMatch(match_element), 1,
match_value_stream_writer)
match_value_stream_writer.receive_atom(log_atom)
match_element = sequence_model_element.get_match_element(
'match', match_context)
log_atom = LogAtom(match_context.match_data,
ParserMatch(match_element), 1,
match_value_stream_writer)
match_value_stream_writer.receive_atom(log_atom)
self.assertEqual(output_stream.getvalue().decode(),
'25537Euro \n25538Euro \n25539Euro \n25540Euro \n')
def create_thumbnail(image_model_instance):
image_path = image_model_instance.original.name
image_name = image_path.split('/').pop()
pil_image = open_image(MEDIA_ROOT + image_path)
pil_image.thumbnail(thumbnail_size, Image.ANTIALIAS)
f = BytesIO()
try:
pil_image.save(f, format=u'JPEG')
s = f.getvalue()
image_model_instance.thumbnail.save("thumb_%s" % image_name, ContentFile(s))
finally:
f.close()
def pdf_response(request):
response = HttpResponse(content_type='application/pdf')
response['Content-Disposition'] = 'attachment; filename="test.pdf"'
buff = BytesIO()
p = canvas.Canvas(buff)
p.drawString(100, 100, "hello world.")
p.showPage()
p.save()
pdf = buff.getvalue()
buff.close()
response.write(pdf)
return response
def func4():
"""
StringIO顾名思义就是在内存中读写str。
"""
f = StringIO("可以这样初始化#\t#\t")
# f = StringIO()
f.write("HelloWorld!") # 后面写入会覆盖初始化
print(f.getvalue()) # getvalue()方法用于获得写入后的str。
"""
StringIO操作的只能是str，如果要操作二进制数据，就需要使用BytesIO
"""
fb = BytesIO()
# f = BytesIO(b'\xe4\xb8\xad\xe6\x96\x87')#也可以这样初始化
fb.write("测试中文".encode(encoding='utf_8'))
print(fb.getvalue())
pass
def get(self, request, *args, **kwargs):
#Indicamos el tipo de contenido a devolver, en este caso un pdf
response = HttpResponse(content_type='application/pdf')
#La clase io.BytesIO permite tratar un array de bytes como un fichero binario, se utiliza como almacenamiento temporal
buffer = BytesIO()
#Canvas nos permite hacer el reporte con coordenadas X y Y
pdf = canvas.Canvas(buffer)
#Llamo al método cabecera donde están definidos los datos que aparecen en la cabecera del reporte.
self.cabecera(pdf)
self.tabla(pdf)
self.razas(pdf)
#Con show page hacemos un corte de página para pasar a la siguiente
pdf.showPage()
pdf.save()
pdf = buffer.getvalue()
buffer.close()
response.write(pdf)
return response
def get(self, request, transaction_number, challan_number):
item_list = json.loads(requests.get(PURCHASE_ITEM_LIST).text)
uom = json.loads(requests.get(UNIT_OF_MEASURE).text)
# po_line_statuses = requests.get(PURCHASE_ORDER_LINES_STATUS)
po_receipt_statuses = json.loads(
requests.get(PURCHASE_ORDER_HEADER_STATUS).text)
receipt_details = json.loads(
requests.get(RECEIPT_SEARCH + 'challan_number=' +
challan_number).text)
if receipt_details['receipt_details'][0]['challan_date']:
receipt_details['receipt_details'][0][
'challan_date'] = receipt_details['receipt_details'][0][
'challan_date'].split(' ')[0]
# po_type = json.loads(requests.get(PURCHASE_ORDER_TYPE).text)
# supplier_list = json.loads(requests.get(SUPPLIER_LIST).text)
#
# data= {'user' : request.user.username,
# 'po_type' : po_type['purchaseOrderType'],
# 'supplier_list' : supplier_list['supplierLists'],
# 'item_list' : item_list['itemDetailsList'],
# 'uom' : uom['UnitOfMeasure']
# }
data = {
'transaction_number': transaction_number,
'item_list': item_list['itemDetailsList'],
'uom': uom['UnitOfMeasure'],
'po_receipt_statuses':
po_receipt_statuses['purchaseOrderHeaderStatus'],
'details': receipt_details['receipt_details'][0]
}
template = jinja_template.get_template(
'pdf-templates/purchase_challan.html')
html = template.render(request, data=data)
response = BytesIO()
pdf = pisa.pisaDocument(BytesIO(html.encode("utf-8")), response)
if not pdf.err:
resp = HttpResponse(response.getvalue(),
content_type='application/pdf')
resp[
'Content-Disposition'] = 'attachment; filename="PurchaseChallan.pdf"'
return resp
else:
return HttpResponse("Error Rendering PDF", status=400)
def writepkg(self, pkg_filename, include_media):
"Code copied from gramps/plugins/export/exportpkg.py"
try:
archive = tarfile.open(pkg_filename, 'w:gz')
except EnvironmentError as msg:
log.warning(str(msg))
self.user.notify_error(
_('Failure writing %s') % pkg_filename, str(msg))
return 0
# Write media files first, since the database may be modified
# during the process (i.e. when removing object)
if include_media:
for m_id in self.db.get_media_handles(sort_handles=True):
mobject = self.db.get_media_from_handle(m_id)
filename = media_path_full(self.db, mobject.get_path())
archname = str(mobject.get_path())
if os.path.isfile(filename) and os.access(filename, os.R_OK):
archive.add(filename, archname, filter=fix_mtime)
# Write XML now
g = BytesIO()
gfile = XmlWriter(self.db,
self.user,
2,
compress=1,
material_type=self.material_type,
description=self.description)
gfile.write_handle(g)
tarinfo = tarfile.TarInfo('data.gramps')
tarinfo.size = len(g.getvalue())
tarinfo.mtime = time.time()
if not win():
tarinfo.uid = os.getuid()
tarinfo.gid = os.getgid()
g.seek(0)
archive.addfile(tarinfo, g)
archive.close()
g.close()
return True
def update_item_pic(self, args):
job_item = args[0]
file_name = job_item.file_name
item_obj = job_item.item_obj
# ----此处二次处理图片为缩略图，避免内存溢出，并使用高斯模糊滤镜----
# PIL打开图片
img = Image.open(file_name)
# 锁定长宽比缩小图片
w, h = img.size
ratio = self.PIC_SIZE / (h if h >= w else w)
img = img.resize((int(w * ratio), int(h * ratio)), Image.ANTIALIAS)
w, h = img.size # 顺便重新获取大小，供后面计算使用
# 高斯模糊
img = img.filter(ImageFilter.GaussianBlur(radius=2))
# 暂存于内存中，使用BytesIO
bio = BytesIO()
img.save(bio, 'jpeg')
# 关闭PIL图像句柄
img.close()
# 利用QPainter将图片在QImage内居中显示
qimg = QImage.fromData(bio.getvalue())
new_qimg = QImage(self.PIC_SIZE, self.PIC_SIZE, QImage.Format_ARGB32)
new_qimg.fill(Qt.white) # 填充白色作为背景，否则显示效果会有些诡异
pnt = QPainter()
pnt.begin(
new_qimg
) # 经测试，在slot里面一定要用QPainter.begin()、QPainter.end()，否则会报错“QPaintDevice: Cannot destroy paint device that is being painted”
pnt.drawImage(max((self.PIC_SIZE - w) / 2, 0),
max((self.PIC_SIZE - h) / 2, 0), qimg) # 居中画图
pnt.end()
# 将QImage显示在QListWidgetItem上
icon = QIcon(QPixmap.fromImage(new_qimg))
item_obj.setIcon(icon)
# 将QListWidgetItem对象添加到界面上的QListWidget中
with self.data_lock:
self.lwPicsList.addItem(item_obj)
self.update_label_text(self.LABEL_FMT.format(len(self.data_list)))
# 关闭BytesIO句柄
bio.close()
def downloadfile1(allfile, facebookdata):
panjang = len(allfile)
if panjang == 3:
##do something
f = StringIO()
wb = Workbook()
ws = wb.active
for row in facebookdata:
f.write(row.name + ',' + row.status + ',' + str(row.like) + ',' +
str(row.comment) + ',' + str(row.share))
f.write('\n')
ws.append([row.name, row.status, row.like, row.comment, row.share])
f.flush()
f.seek(0)
##make json
g = StringIO()
data = []
for row in facebookdata:
data1 = {}
data1["NAME"] = row.name
data1["STATUS"] = row.status
data1["LIKE"] = row.like
data1["COMMENT"] = row.comment
data1["SHARE"] = row.share
data.append(data1)
json.dump(data, g, indent=3)
g.flush()
g.seek(0)
output = BytesIO()
zip = ZipFile(output, 'w')
zip.writestr("Data_facebook.csv", f.getvalue())
zip.writestr("Data_facebook.JSON", g.getvalue())
zip.writestr("Data_facebook.xlsx", save_virtual_workbook(wb))
zip.close()
response = HttpResponse(output.getvalue(),
content_type='application/octet-stream')
response[
'Content-Disposition'] = 'attachment; filename=Data_facebook.zip'
return response
elif panjang == 2:
##read list
if '0' and '1' in allfile:
##return csv and json
print('csv and jsn')
#make csv
f = StringIO()
for row in facebookdata:
f.write(row.name + ',' + row.status + ',' + str(row.like) +
',' + str(row.comment) + ',' + str(row.share))
f.write('\n')
f.flush()
f.seek(0)
##make json
g = StringIO()
data = []
for row in facebookdata:
data1 = {}
data1["NAME"] = row.name
data1["STATUS"] = row.status
data1["LIKE"] = row.like
data1["COMMENT"] = row.comment
data1["SHARE"] = row.share
data.append(data1)
json.dump(data, g, indent=3)
g.flush()
g.seek(0)
output = BytesIO()
zip = ZipFile(output, 'w')
zip.writestr("Data_facebook.csv", f.getvalue())
zip.writestr("Data_facebook.JSON", g.getvalue())
zip.close()
response = HttpResponse(output.getvalue(),
content_type='application/octet-stream')
response[
'Content-Disposition'] = 'attachment; filename=Data_facebook.zip'
return response
elif '0' and '2' in allfile:
#return csv and xls
print('csv and xls')
f = StringIO()
for row in facebookdata:
f.write(row.name + ',' + row.status + ',' + str(row.like) +
',' + str(row.comment) + ',' + str(row.share))
f.write('\n')
f.flush()
f.seek(0)
g = StringIO()
wb = Workbook()
ws = wb.active
for row in facebookdata:
ws.append(
[row.name, row.status, row.like, row.comment, row.share])
output = BytesIO()
zip = ZipFile(output, 'w')
zip.writestr("Data_facebook.csv", f.getvalue())
zip.writestr("Data_facebook.xlsx", save_virtual_workbook(wb))
zip.close()
response = HttpResponse(output.getvalue(),
content_type='application/octet-stream')
response[
'Content-Disposition'] = 'attachment; filename=Data_facebook.zip'
return response
else:
#return json xls
#make json file
f = StringIO()
data = []
for row in facebookdata:
data1 = {}
data1["NAME"] = row.name
data1["TWEET"] = row.tweet
data1["RETWEET_USER"] = row.Retweet_user
data1["HASHTAGS"] = row.hashtag
data1["DATE"] = str(row.date)
data.append(data1)
json.dump(data, f, indent=3)
f.flush()
f.seek(0)
#make xls file
g = StringIO()
wb = Workbook()
ws = wb.active
for row in facebookdata:
ws.append(
[row.name, row.status, row.like, row.comment, row.share])
output = BytesIO()
zip = ZipFile(output, 'w')
zip.writestr("Data_facebook.csv", f.getvalue())
zip.writestr("Data_facebook.xlsx", save_virtual_workbook(wb))
zip.close()
response = HttpResponse(output.getvalue(),
content_type='application/octet-stream')
response[
'Content-Disposition'] = 'attachment; filename=Data_facebook.zip'
return response
elif panjang == 0:
##asli
print('do nothing')
return HttpResponseRedirect('../search2')
else:
if '0' in allfile:
f = StringIO()
writer = csv.writer(f)
for row in facebookdata:
writer.writerow(
[row.name, row.status, row.like, row.comment, row.share])
f.flush()
f.seek(0)
response = HttpResponse(FileWrapper(f), content_type='text/csv')
response[
'Content-Disposition'] = 'attachment; filename=Data_facebook.csv'
return response
elif '1' in allfile:
f = StringIO()
data = []
for row in facebookdata:
data1 = {}
data1["NAME"] = row.name
data1["STATUS"] = row.status
data1["LIKE"] = row.like
data1["COMMENT"] = row.comment
data1["SHARE"] = row.share
data.append(data1)
json.dump(data, f, indent=3)
f.flush()
f.seek(0)
response = HttpResponse(FileWrapper(f), content_type='js/json')
response[
'Content-Disposition'] = 'attachment; filename=Data_facebook.json'
return response
else:
f = StringIO()
wb = Workbook()
ws = wb.active
for row in facebookdata:
ws.append(
[row.name, row.status, row.like, row.comment, row.share])
response = HttpResponse(save_virtual_workbook(wb),
content_type='application/vnd.ms-excel')
response[
'Content-Disposition'] = 'attachment; filename=Data_facebook.xlsx'
return response
#myyfactory = qrcode.image.svg.SvgImage
#image.models.
img = qr.make_image()
#print(img)
#ssuy = open("Blu_QR"+localuu[1:6]+".txt","w")
#img.save("Blu_QR"+localuu[1:6]+".png", format='PNG')
#img.save("Blu_QR"+localuu[1:6]+"_RLE.bmp", format='BMP', compression="bmp_rle")
#img.save("Blu_QR"+localuu[1:6]+".bmp", format='BMP')
bbuu = BytesIO()
uiee = BytesIO()
img.save(bbuu, format='PNG')
bbuu.seek(0)
#ssuy.flush()
#bytesobj = img.tobytes('raw')
#bytesobj = img.tobytes('PNG') FAILS
bytesobj = bbuu.getvalue()
#khyz = img.get_image()
img_str = binascii.b2a_base64(bytesobj)
#img_str = binascii.b2a_base64(ravdec.net_compression(bytesobj))
#img_str = ravdec.net_compression(binascii.b2a_base64(bytesobj))
#compresst = ravdec.net_compression(img_str)
#compresst = ravdec.net_compression(img_str)
#ssuy.writelines(img_str)
#ssuy.flush()
#img_str = bytesobj.format("02X")
#img = qr.make(CurQuery,mfactory=myyfactory)
#testbase64data = "DEFAULT ERROR"
testbase64data = img_str
#testbase64data = base64.b64encode(img_str)
#buffer = cStringIO.StringIO(yuinn)
def export_bangdiem(baithi):
'''
export bang diem ra pdf
'''
rows_len = len(baithi)
table_data=[]
table_data.append([u'BỘ QUỐC PHÒNG', u'CỘNG HÒA XÃ HỘI CHỦ NGHĨA VIỆT NAM'])
table_data.append([u'HỌC VIỆN HẬU CẦN', u'Độc lập - Tự do - Hạnh phúc'])
table_data.append([u'', u'Hà Nội, ngày ' + str(timezone.now().day) + u' tháng ' + str(timezone.now().month) + u' năm ' + str(timezone.now().year)])
buf = BytesIO()
# file_name = 'dethi.pdf'
doc = SimpleDocTemplate(buf)
pars = [Spacer(1, 0.1*inch)]
# pars = []
title_table = Table(table_data, colWidths=[250, PAGE_WIDTH-250])
title_table.setStyle(TableStyle([('FONT', (0,0), (1,1), 'TimesBd', 13),
('FONT', (0,2), (-1,-1), 'Times', 13),
('ALIGN', (0,0), (-1,-1), 'CENTER'),
]))
pars.append(title_table)
pars.append(Spacer(1, 0.5*inch))
bd_title_table_data = [[u'BÁO CÁO KẾT QUẢ THI']]
bd_title_table_data.append([u'môn: ' + baithi[0].khthi.mon_thi.ten_mon_thi + u' đvht: ' + str(baithi[0].khthi.mon_thi.so_dvht)])
ngay_thi = '%d - %d - %d' %(baithi[0].khthi.ngay_thi.day, baithi[0].khthi.ngay_thi.month, baithi[0].khthi.ngay_thi.year)
bd_title_table_data.append([u'lớp: ' + baithi[0].thi_sinh.lop.ten_lop + u' ngày thi: ' + ngay_thi])
bd_title_table = Table(bd_title_table_data, colWidths=[PAGE_WIDTH])
bd_title_table.setStyle(TableStyle([('FONT', (0,0), (0,0), 'TimesBd', 14),
('FONT', (0,1), (-1,-1), 'Times', 13),
('ALIGN', (0,0), (-1,-1), 'CENTER'),
#('BOX', (1,0), (-1,-1), 1.25, colors.black),
]))
pars.append(bd_title_table)
pars.append(Spacer(1, 0.5*inch))
bd_table_data = [[u'STT', u'Họ tên', u'Điểm', u'Ghi chú']]
n = 1
for bt in baithi:
row = [str(n), bt.thi_sinh.get_ho_ten, str(bt.diem), ""]
bd_table_data.append(row)
n = n + 1
bd_table = Table(bd_table_data, colWidths=[50, 250, 50, 100])
bd_table.setStyle(TableStyle([('FONT', (0,0), (3,0), 'TimesBd', 13),
('FONT', (0,1), (-1,-1), 'Times', 13),
('ALIGN', (0,0), (-1,0), 'CENTER'), #header
('ALIGN', (0,0), (0,-1), 'CENTER'), #STT
('INNERGRID', (0,0), (-1,-1), 0.25, colors.black),
('BOX', (0,0), (-1,-1), 0.5, colors.black),
]))
pars.append(bd_table)
pars.append(Spacer(1, 0.5*inch))
# ký
sig_table_data = [[u'-------HẾT--------', u'']]
sig_table_data.append([u'' ,u'TRƯỞNG KHOA'])
sig_table_data.append([u'' ,u'(Ký, họ tên)'])
sig_table = Table(sig_table_data, colWidths=[PAGE_WIDTH-300, 200])
sig_table.setStyle(TableStyle([('FONT', (0,0), (1,0), 'Times', 13),
('FONT', (0,1), (1,1), 'TimesBd', 13),
('FONT', (0,2), (1,2), 'TimesIt', 13),
('ALIGN', (0,0), (-1,-1), 'CENTER'),
('SPAN',(0,0),(1,0)),
]))
pars.append(sig_table)
doc.build(pars, onFirstPage=myFirstPage, onLaterPages=myLaterPages)
# Get the value of the BytesIO buffer and write it to the response.
pdf = buf.getvalue()
buf.close()
return pdf
'''
@author: xilh
@since: 20200128
'''
from _io import BytesIO
from demo.tools.tool import pline
# 创建对象
f = BytesIO()
f.write('hello'.encode(encoding='utf_8'))
f.write(' '.encode(encoding='utf_8'))
f.write('world'.encode(encoding='utf_8'))
f.write(' '.encode(encoding='utf_8'))
f.write('张三'.encode(encoding='utf_8'))
# 获取值
ret = f.getvalue()
print(ret)
pline()
f = BytesIO('张三是程序员'.encode('utf-8'))
print(f.readline())
# 关闭
f.close()
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
'''
Created on 2018年11月13日
@author: zzk
'''
# StringIO和BytesIO是在内存中操作str和bytes的方法，使得和读写文件具有一致的接口。
# StringIO顾名思义就是在内存中读写str。
from io import StringIO
from _io import BytesIO
f=StringIO('hello\nworld\n zzk')
f2=StringIO()
f2.write('my\nname\nis\nzzk')
print(f2.getvalue())
print('====================')
while True:
s=f.readline()
if s=='':
break
print(s.strip())
print('====================')
# BytesIO
fb = BytesIO()
fb.write('哈哈哈'.encode('utf-8'))
print(fb.getvalue())
fb2 = BytesIO(b'\xe5\x93\x88\xe5\x93\x88\xe5\x93\x88')
print(fb2.read().decode('utf-8'))
from _io import StringIO, BytesIO
f = open('E:/a.txt', 'r')
for line in f.readlines():
print(line.strip())
f.close()
#readline 和 readlines
#像open()函数返回的这种有个read()方法的对象，
#在Python中统称为file-like Object
with open('E:/a.txt', 'w') as f:
f.write("en")
f = StringIO()
f.write("hello")
f.write(" ")
f.write("world")
print(f.getvalue())
b = BytesIO()
b.write("中文".encode(encoding='utf_8', errors='strict'))
str = b.getvalue()
print(str)
def export_pdf(de_thi, dapan):
'''
export de thi trac nghiem ra pdf
'''
socau = len(dapan)
table_data=[]
table_data.append([u'HỌC VIỆN HẬU CẦN', u'ĐỀ THI KẾT THÚC MÔN'])
table_data.append([u'%s' %de_thi.logSinhDe.monHoc.khoa.ten_dv, u'MÔN: ' + de_thi.logSinhDe.monHoc.ten_mon_thi])
table_data.append([u'', u'Đối tượng: ' + de_thi.logSinhDe.doiTuong.ten_dt])
table_data.append([u'', u'Thời gian: '])
table_data.append([u'', u'Đề gồm: ' + str(socau) + u' câu'])
buf = BytesIO()
# file_name = 'dethi.pdf'
doc = SimpleDocTemplate(buf)
pars = [Spacer(1, 0.1*inch)]
# pars = []
title_table = Table(table_data, colWidths=[(PAGE_WIDTH-100)/2.0]*2)
title_table.setStyle(TableStyle([('FONT', (0,0), (1,1), 'TimesBd', 13),
('FONT', (0,2), (-1,-1), 'Times', 13),
('ALIGN', (0,0), (-1,-1), 'CENTER'),
]))
pars.append(title_table)
pars.append(Spacer(1, 0.5*inch))
sv_info_table_data = [[u'Mã môn học: '+ de_thi.logSinhDe.monHoc.ma_mon_thi + u' - Số tín chỉ (hoặc đvht): ' , u'Mã đề thi']]
sv_info_table_data.append([u'Lớp: ' ,de_thi.maDeThi])
sv_info_table_data.append([u'Mã học viên, sinh viên: ',''])
sv_info_table_data.append([u'Họ tên học viên, sinh viên: ',''])
sv_info_table = Table(sv_info_table_data, colWidths=[PAGE_WIDTH-200, 100])
sv_info_table.setStyle(TableStyle([('FONT', (1,0), (-1,-1), 'TimesBd', 13),
('FONT', (0,0), (0,-1), 'Times', 13),
('ALIGN', (1,0), (-1,-1), 'CENTER'),
('BOX', (1,0), (-1,-1), 1.25, colors.black),
]))
pars.append(sv_info_table)
pars.append(Spacer(1, 0.5*inch))
n = 1
for question, answers in dapan:
# question
p = Paragraph(u'Câu ' + str(n) + ": " + question.noiDung, question_style)
n += 1
pars.append(p)
# answers
ls = ['A. ', 'B. ', 'C. ', 'D. ']
for l, answer in zip(ls, answers):
pars.append(Spacer(1, 0.03*inch))
p = Paragraph(l + answer.dapAn, answer_stype)
pars.append(p)
pars.append(Spacer(1, 0.03*inch))
pars.append(Spacer(1, 0.05*inch))
# ký
sig_table_data = [[u'-------HẾT--------', u'']]
sig_table_data.append([u'' ,u'TRƯỞNG KHOA'])
sig_table_data.append([u'' ,u'(Ký, họ tên)'])
sig_table = Table(sig_table_data, colWidths=[PAGE_WIDTH-300, 200])
sig_table.setStyle(TableStyle([('FONT', (0,0), (1,0), 'Times', 13),
('FONT', (0,1), (1,1), 'TimesBd', 13),
('FONT', (0,2), (1,2), 'TimesIt', 13),
('ALIGN', (0,0), (-1,-1), 'CENTER'),
('SPAN',(0,0),(1,0)),
]))
pars.append(sig_table)
doc.build(pars, onFirstPage=myFirstPage, onLaterPages=myLaterPages)
# Get the value of the BytesIO buffer and write it to the response.
pdf = buf.getvalue()
buf.close()
return pdf
'''
Created on 2017年6月21日
@author: admin
'''
from io import StringIO #StringIO模块的作用是在内存中读写
from _io import BytesIO
f = StringIO()
s = f.write('wskd fkdsa ')
print(f.getvalue()) #获取写入的值
print(s) #获取长度
n = BytesIO()
n.write('中文'.encode('utf_8')) #写入的不是str类型，而是经过utf-8编码的。
#n.write('中文'.encode(encoding='utf_8', errors='strict'))
print(n)
print(n.getvalue())
data = '人闲桂花落，夜静春山空。月出惊山鸟，时鸣春涧中。'.encode('utf-8')
n = BytesIO(data)
print(n)
print(n.read())
def export_baithi_dapan_pdf(de_thi, dapan, baithi):
'''
export de thi trac nghiem ra pdf
'''
socau = len(dapan)
table_data=[]
table_data.append([u'HỌC VIỆN HẬU CẦN', u'ĐÁP ÁN MÔN THI'])
table_data.append([u'%s' %de_thi.logSinhDe.monHoc.khoa.ten_dv, u'MÔN: ' + de_thi.logSinhDe.monHoc.ten_mon_thi])
table_data.append([u'', u'Đối tượng: ' + de_thi.logSinhDe.doiTuong.ten_dt])
table_data.append([u'', u'Thời gian: '])
table_data.append([u'', u'Đề gồm: ' + str(socau) + u' câu'])
buf = BytesIO()
# file_name = 'dethi.pdf'
doc = SimpleDocTemplate(buf)
pars = [Spacer(1, 0.1*inch)]
# pars = []
title_table = Table(table_data, colWidths=[(PAGE_WIDTH-100)/2.0]*2)
title_table.setStyle(TableStyle([('FONT', (0,0), (1,1), 'TimesBd', 13),
('FONT', (0,2), (-1,-1), 'Times', 13),
('ALIGN', (0,0), (-1,-1), 'CENTER'),
]))
pars.append(title_table)
pars.append(Spacer(1, 0.5*inch))
sv_info_table_data = [[u'Mã môn học: '+ de_thi.logSinhDe.monHoc.ma_mon_thi + u' - Số tín chỉ (hoặc đvht): ' , u'Mã đề thi']]
sv_info_table_data.append([u'Lớp: ' ,de_thi.maDeThi + baithi.thi_sinh.ma_sv.split('-')[1]])
sv_info_table_data.append([u'Mã học viên, sinh viên: ',''])
sv_info_table_data.append([u'Họ tên học viên, sinh viên: ',''])
sv_info_table = Table(sv_info_table_data, colWidths=[PAGE_WIDTH-200, 100])
sv_info_table.setStyle(TableStyle([('FONT', (1,0), (-1,-1), 'TimesBd', 13),
('FONT', (0,0), (0,-1), 'Times', 13),
('ALIGN', (1,0), (-1,-1), 'CENTER'),
('BOX', (1,0), (-1,-1), 1.25, colors.black),
]))
pars.append(sv_info_table)
pars.append(Spacer(1, 0.5*inch))
for i in xrange(1, len(dapan)+1):
cau_hoi = str(i)
dap_an = dapan[cau_hoi]
# question
p = Paragraph(u'Câu ' + cau_hoi + ": " + dap_an, answer_stype)
pars.append(p)
pars.append(Spacer(1, 0.05*inch))
# ký
sig_table_data = [[u'-------HẾT--------', u'']]
sig_table_data.append([u'' ,u'TRƯỞNG KHOA'])
sig_table_data.append([u'' ,u'(Ký, họ tên)'])
sig_table = Table(sig_table_data, colWidths=[PAGE_WIDTH-300, 200])
sig_table.setStyle(TableStyle([('FONT', (0,0), (1,0), 'Times', 13),
('FONT', (0,1), (1,1), 'TimesBd', 13),
('FONT', (0,2), (1,2), 'TimesIt', 13),
('ALIGN', (0,0), (-1,-1), 'CENTER'),
('SPAN',(0,0),(1,0)),
]))
pars.append(sig_table)
doc.build(pars, onFirstPage=myFirstPage, onLaterPages=myLaterPages)
# Get the value of the BytesIO buffer and write it to the response.
pdf = buf.getvalue()
buf.close()
return pdf