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POunsupported operand type(s) for +: 'int' and 'unicode'
 

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  1. POunsupported operand type(s) for +: 'int' and 'unicode'
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    <p>I am working with a templatetag to return the variable from a formula I have written. I have been trying to find out why I am getting this traceback. I have tested the formula's in the shell and all are working properly. I have done some print statements in the tag and views. But can't figure out the reason for this.</p> <p><strong>TRACEBACK:</strong></p> <pre><code>Traceback: File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/core/handlers/base.py" in get_response 117. response = middleware_method(request, e) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/core/handlers/base.py" in get_response 111. response = callback(request, *callback_args, **callback_kwargs) File "/Users/urbanrunic/developement/levelend/levelend/levelend/configs/common/../../apps/common/utils/decorators.py" in wrapper 65. context_instance=RequestContext(request), mimetype=mimetype) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/shortcuts/__init__.py" in render_to_response 20. return HttpResponse(loader.render_to_string(*args, **kwargs), **httpresponse_kwargs) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/loader.py" in render_to_string 188. return t.render(context_instance) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/base.py" in render 123. return self._render(context) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/base.py" in _render 117. return self.nodelist.render(context) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/base.py" in render 744. bits.append(self.render_node(node, context)) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/debug.py" in render_node 73. result = node.render(context) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/loader_tags.py" in render 127. return compiled_parent._render(context) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/base.py" in _render 117. return self.nodelist.render(context) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/base.py" in render 744. bits.append(self.render_node(node, context)) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/debug.py" in render_node 73. result = node.render(context) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/loader_tags.py" in render 127. return compiled_parent._render(context) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/base.py" in _render 117. return self.nodelist.render(context) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/base.py" in render 744. bits.append(self.render_node(node, context)) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/debug.py" in render_node 73. result = node.render(context) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django_static/templatetags/django_static.py" in render 108. code = self.nodelist.render(context) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/base.py" in render 744. bits.append(self.render_node(node, context)) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/debug.py" in render_node 73. result = node.render(context) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/loader_tags.py" in render 64. result = block.nodelist.render(context) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/base.py" in render 744. bits.append(self.render_node(node, context)) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/debug.py" in render_node 73. result = node.render(context) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/loader_tags.py" in render 64. result = block.nodelist.render(context) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/base.py" in render 744. bits.append(self.render_node(node, context)) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/debug.py" in render_node 73. result = node.render(context) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/defaulttags.py" in render 311. return self.nodelist_true.render(context) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/base.py" in render 744. bits.append(self.render_node(node, context)) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/debug.py" in render_node 73. result = node.render(context) File "/Users/urbanrunic/.virtualenvs/levelend/lib/python2.6/site-packages/django/template/defaulttags.py" in render 227. nodelist.append(node.render(context)) File "/Users/urbanrunic/developement/levelend/levelend/levelend/configs/common/../../apps/lender/templatetags/lender_tags.py" in render 15. context[self.min] = monthlyPayment(self.how_much, self.apr_min, self.max_repayment_length) File "/Users/urbanrunic/developement/levelend/levelend/levelend/configs/common/../../apps/lender/utils.py" in monthlyPayment 34. M = P / ((1 - 1 / (1 + mi) ** n) / mi) Exception Type: TemplateSyntaxError at /results/ Exception Value: Caught TypeError while rendering: unsupported operand type(s) for +: 'int' and 'unicode' </code></pre> <p><strong>FORMULA:</strong></p> <pre><code>def monthlyPayment(P, mi, n): """ returns monthly payment """ M = P / ((1 - 1 / (1 + mi) ** n) / mi) return M </code></pre> <p><strong>TAG:</strong></p> <pre><code>class MinMonthlyPaymentsNode(Node): def __init__(self, how_much, apr_min, max_repayment_length, min): self.how_much, self.apr_min, self.max_repayment_length, self.min = how_much, apr_min, max_repayment_length, min def render(self, context): context[self.min] = monthlyPayment(self.how_much, self.apr_min, self.max_repayment_length) return '' def do_monthly_payment(parser, token): """ returns a monthly payment based on the formula with interst and amount of loan Example usage: {% min_monthly_payments how_much, apr_min, max_repayment_length as [min]%} """ args = token.contents.split() if len(args) != 6: raise TemplateSyntaxError, "min_monthly_payments tag takes exactly six arguments" if args[4] != 'as': raise TemplateSyntaxError, "fourth argument to the min_monthly_payments tag must be 'as'" return MinMonthlyPaymentsNode(args[1], args[2], args[3], args[5]) register.tag('min_monthly_payments', do_monthly_payment) </code></pre> <p><strong>MODELS:</strong></p> <pre><code>class Lender(TitleAndSlugModel): """ A lender """ DISBURSED_TYPES = get_namedtuple_choices('DISBURSED_TYPES', ( (0, 'DIRECT_TO_SCHOOL', 'Directly to School'), (1, 'SENT_TO_YOU', 'Sent to You'), )) SUITABILITY_TYPES = get_namedtuple_choices('SUITABILITY_TYPES', ( (0, 'UNDERGRADUATE', 'Undergraduate'), (1, 'GRADUATE', 'Graduate'), (2, 'LAW', 'Law'), (3, 'MEDICAL', 'Medical'), (4, 'PARENTS', 'Parents'), )) # Financial summary apr_min = models.DecimalField(max_digits=5, decimal_places=2) apr_max = models.DecimalField(max_digits=5, decimal_places=2) # Borrower rewards auto_debit_discount = models.DecimalField(max_digits=5, decimal_places=2) auto_debit_discount_note = models.CharField(max_length=250, null=True, blank=True) additional_rewards_1 = models.DecimalField(max_digits=5, decimal_places=2, null=True, blank=True) additional_rewards_1_note = models.CharField(max_length=250, null=True, blank=True) additional_rewards_2 = models.DecimalField(max_digits=5, decimal_places=2, null=True, blank=True) additional_rewards_2_note = models.CharField(max_length=250, null=True, blank=True) # General info loan_name = models.CharField(max_length=250) loan_services_by = models.CharField(max_length=250) funds_disbursed = models.PositiveIntegerField(choices=DISBURSED_TYPES.get_choices(), default=0) co_signer_release_available = models.IntegerField(null=True, blank=True, help_text="Please enter in months") suitable_for = MultiSelectField(max_length=50, choices=SUITABILITY_TYPES.get_choices()) external_url = models.URLField(max_length=250) lender_logo = FileBrowseField("Image", max_length=200, directory="uploads/", extensions=[".jpg"], blank=True, null=True) schools = models.ManyToManyField(School) # Repayment max_repayment_length = models.IntegerField(null=True, blank=True, help_text="Please enter in years") max_deferral_length = models.IntegerField(null=True, blank=True, help_text="Enter as X months after graduation") # Rates interest_rate_index = models.DecimalField(max_digits=5, decimal_places=2) interest_rate_index_note = models.CharField(max_length=250, null=True, blank=True) min_repayment_rate = models.DecimalField(max_digits=5, decimal_places=2) min_repayment_rate_note = models.CharField(max_length=250, null=True, blank=True) max_repayment_rate = models.DecimalField(max_digits=5, decimal_places=2) max_repayment_rate_note = models.CharField(max_length=250, null=True, blank=True) # Fees origination_fee = models.DecimalField(max_digits=5, decimal_places=2, null=True, blank=True) guarantee_fee = models.DecimalField(max_digits=5, decimal_places=2, null=True, blank=True) # Notes notes = models.TextField(null=True, blank=True) def get_absolute_url(self): return reverse("results_detail", args=[self.slug]) def __unicode__(self): return "%s" % (self.title) </code></pre> <p>Again any help will be greatly appreciated, even if it's a point in the right direction. Thank you!</p>
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    1. COIf your question is about a traceback, include the traceback.
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      1. USJosh Lee
    2. COCan you please edit your question to include the actual traceback?
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    3. COSorry about that, have edited with the traceback added.
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