prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  BatchError is unprintable using default constructor (one string)
  This one should be pretty simple, I hope.
  
  Here's the constructor signature: `def __init__(self, reason, resp=None, content=None):`, which doesn't require `resp` to be defined, and I can see it is not defined most of the time, for example, in googleapiclient/http.py.
  
  Then, given the representation method:
  
  ```
  def __repr__(self):
        return '<BatchError %s "%s">' % (self.resp.status, self.reason)
  ```
  
  Which is also the string method:
  
  ```
  __str__ = __repr__
  ```
  
  This results in unprintable exceptions where `resp` is undefined, which is not very helpful when attempting to understand the error (e.g. #164).
  
  
  </issue>
  <code>
  [start of googleapiclient/errors.py]
  1 # Copyright 2014 Google Inc. All Rights Reserved.
  2 #
  3 # Licensed under the Apache License, Version 2.0 (the "License");
  4 # you may not use this file except in compliance with the License.
  5 # You may obtain a copy of the License at
  6 #
  7 #      http://www.apache.org/licenses/LICENSE-2.0
  8 #
  9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14 
  15 """Errors for the library.
  16 
  17 All exceptions defined by the library
  18 should be defined in this file.
  19 """
  20 from __future__ import absolute_import
  21 
  22 __author__ = 'jcgregorio@google.com (Joe Gregorio)'
  23 
  24 import json
  25 
  26 # Oauth2client < 3 has the positional helper in 'util', >= 3 has it
  27 # in '_helpers'.
  28 try:
  29   from oauth2client import util
  30 except ImportError:
  31   from oauth2client import _helpers as util
  32 
  33 
  34 class Error(Exception):
  35   """Base error for this module."""
  36   pass
  37 
  38 
  39 class HttpError(Error):
  40   """HTTP data was invalid or unexpected."""
  41 
  42   @util.positional(3)
  43   def __init__(self, resp, content, uri=None):
  44     self.resp = resp
  45     if not isinstance(content, bytes):
  46         raise TypeError("HTTP content should be bytes")
  47     self.content = content
  48     self.uri = uri
  49 
  50   def _get_reason(self):
  51     """Calculate the reason for the error from the response content."""
  52     reason = self.resp.reason
  53     try:
  54       data = json.loads(self.content.decode('utf-8'))
  55       if isinstance(data, dict):
  56         reason = data['error']['message']
  57       elif isinstance(data, list) and len(data) > 0:
  58         first_error = data[0]
  59         reason = first_error['error']['message']
  60     except (ValueError, KeyError, TypeError):
  61       pass
  62     if reason is None:
  63       reason = ''
  64     return reason
  65 
  66   def __repr__(self):
  67     if self.uri:
  68       return '<HttpError %s when requesting %s returned "%s">' % (
  69           self.resp.status, self.uri, self._get_reason().strip())
  70     else:
  71       return '<HttpError %s "%s">' % (self.resp.status, self._get_reason())
  72 
  73   __str__ = __repr__
  74 
  75 
  76 class InvalidJsonError(Error):
  77   """The JSON returned could not be parsed."""
  78   pass
  79 
  80 
  81 class UnknownFileType(Error):
  82   """File type unknown or unexpected."""
  83   pass
  84 
  85 
  86 class UnknownLinkType(Error):
  87   """Link type unknown or unexpected."""
  88   pass
  89 
  90 
  91 class UnknownApiNameOrVersion(Error):
  92   """No API with that name and version exists."""
  93   pass
  94 
  95 
  96 class UnacceptableMimeTypeError(Error):
  97   """That is an unacceptable mimetype for this operation."""
  98   pass
  99 
  100 
  101 class MediaUploadSizeError(Error):
  102   """Media is larger than the method can accept."""
  103   pass
  104 
  105 
  106 class ResumableUploadError(HttpError):
  107   """Error occured during resumable upload."""
  108   pass
  109 
  110 
  111 class InvalidChunkSizeError(Error):
  112   """The given chunksize is not valid."""
  113   pass
  114 
  115 class InvalidNotificationError(Error):
  116   """The channel Notification is invalid."""
  117   pass
  118 
  119 class BatchError(HttpError):
  120   """Error occured during batch operations."""
  121 
  122   @util.positional(2)
  123   def __init__(self, reason, resp=None, content=None):
  124     self.resp = resp
  125     self.content = content
  126     self.reason = reason
  127 
  128   def __repr__(self):
  129       return '<BatchError %s "%s">' % (self.resp.status, self.reason)
  130 
  131   __str__ = __repr__
  132 
  133 
  134 class UnexpectedMethodError(Error):
  135   """Exception raised by RequestMockBuilder on unexpected calls."""
  136 
  137   @util.positional(1)
  138   def __init__(self, methodId=None):
  139     """Constructor for an UnexpectedMethodError."""
  140     super(UnexpectedMethodError, self).__init__(
  141         'Received unexpected call %s' % methodId)
  142 
  143 
  144 class UnexpectedBodyError(Error):
  145   """Exception raised by RequestMockBuilder on unexpected bodies."""
  146 
  147   def __init__(self, expected, provided):
  148     """Constructor for an UnexpectedMethodError."""
  149     super(UnexpectedBodyError, self).__init__(
  150         'Expected: [%s] - Provided: [%s]' % (expected, provided))
  151
  [end of googleapiclient/errors.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/googleapiclient/errors.py b/googleapiclient/errors.py
  --- a/googleapiclient/errors.py
  +++ b/googleapiclient/errors.py
  @@ -126,6 +126,9 @@
       self.reason = reason
   
     def __repr__(self):
  +    if getattr(self.resp, 'status', None) is None:
  +      return '<BatchError "%s">' % (self.reason)
  +    else:
         return '<BatchError %s "%s">' % (self.resp.status, self.reason)
   
     __str__ = __repr__
  
verification_info: {"golden_diff": "diff --git a/googleapiclient/errors.py b/googleapiclient/errors.py\n--- a/googleapiclient/errors.py\n+++ b/googleapiclient/errors.py\n@@ -126,6 +126,9 @@\n     self.reason = reason\n \n   def __repr__(self):\n+    if getattr(self.resp, 'status', None) is None:\n+      return '<BatchError \"%s\">' % (self.reason)\n+    else:\n       return '<BatchError %s \"%s\">' % (self.resp.status, self.reason)\n \n   __str__ = __repr__\n", "issue": "BatchError is unprintable using default constructor (one string)\nThis one should be pretty simple, I hope.\n\nHere's the constructor signature: `def __init__(self, reason, resp=None, content=None):`, which doesn't require `resp` to be defined, and I can see it is not defined most of the time, for example, in googleapiclient/http.py.\n\nThen, given the representation method:\n\n```\ndef __repr__(self):\n      return '<BatchError %s \"%s\">' % (self.resp.status, self.reason)\n```\n\nWhich is also the string method:\n\n```\n__str__ = __repr__\n```\n\nThis results in unprintable exceptions where `resp` is undefined, which is not very helpful when attempting to understand the error (e.g. #164).\n\n", "before_files": [{"content": "# Copyright 2014 Google Inc. All Rights Reserved.\n#\n# Licensed under the Apache License, Version 2.0 (the \"License\");\n# you may not use this file except in compliance with the License.\n# You may obtain a copy of the License at\n#\n#      http://www.apache.org/licenses/LICENSE-2.0\n#\n# Unless required by applicable law or agreed to in writing, software\n# distributed under the License is distributed on an \"AS IS\" BASIS,\n# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n# See the License for the specific language governing permissions and\n# limitations under the License.\n\n\"\"\"Errors for the library.\n\nAll exceptions defined by the library\nshould be defined in this file.\n\"\"\"\nfrom __future__ import absolute_import\n\n__author__ = 'jcgregorio@google.com (Joe Gregorio)'\n\nimport json\n\n# Oauth2client < 3 has the positional helper in 'util', >= 3 has it\n# in '_helpers'.\ntry:\n  from oauth2client import util\nexcept ImportError:\n  from oauth2client import _helpers as util\n\n\nclass Error(Exception):\n  \"\"\"Base error for this module.\"\"\"\n  pass\n\n\nclass HttpError(Error):\n  \"\"\"HTTP data was invalid or unexpected.\"\"\"\n\n  @util.positional(3)\n  def __init__(self, resp, content, uri=None):\n    self.resp = resp\n    if not isinstance(content, bytes):\n        raise TypeError(\"HTTP content should be bytes\")\n    self.content = content\n    self.uri = uri\n\n  def _get_reason(self):\n    \"\"\"Calculate the reason for the error from the response content.\"\"\"\n    reason = self.resp.reason\n    try:\n      data = json.loads(self.content.decode('utf-8'))\n      if isinstance(data, dict):\n        reason = data['error']['message']\n      elif isinstance(data, list) and len(data) > 0:\n        first_error = data[0]\n        reason = first_error['error']['message']\n    except (ValueError, KeyError, TypeError):\n      pass\n    if reason is None:\n      reason = ''\n    return reason\n\n  def __repr__(self):\n    if self.uri:\n      return '<HttpError %s when requesting %s returned \"%s\">' % (\n          self.resp.status, self.uri, self._get_reason().strip())\n    else:\n      return '<HttpError %s \"%s\">' % (self.resp.status, self._get_reason())\n\n  __str__ = __repr__\n\n\nclass InvalidJsonError(Error):\n  \"\"\"The JSON returned could not be parsed.\"\"\"\n  pass\n\n\nclass UnknownFileType(Error):\n  \"\"\"File type unknown or unexpected.\"\"\"\n  pass\n\n\nclass UnknownLinkType(Error):\n  \"\"\"Link type unknown or unexpected.\"\"\"\n  pass\n\n\nclass UnknownApiNameOrVersion(Error):\n  \"\"\"No API with that name and version exists.\"\"\"\n  pass\n\n\nclass UnacceptableMimeTypeError(Error):\n  \"\"\"That is an unacceptable mimetype for this operation.\"\"\"\n  pass\n\n\nclass MediaUploadSizeError(Error):\n  \"\"\"Media is larger than the method can accept.\"\"\"\n  pass\n\n\nclass ResumableUploadError(HttpError):\n  \"\"\"Error occured during resumable upload.\"\"\"\n  pass\n\n\nclass InvalidChunkSizeError(Error):\n  \"\"\"The given chunksize is not valid.\"\"\"\n  pass\n\nclass InvalidNotificationError(Error):\n  \"\"\"The channel Notification is invalid.\"\"\"\n  pass\n\nclass BatchError(HttpError):\n  \"\"\"Error occured during batch operations.\"\"\"\n\n  @util.positional(2)\n  def __init__(self, reason, resp=None, content=None):\n    self.resp = resp\n    self.content = content\n    self.reason = reason\n\n  def __repr__(self):\n      return '<BatchError %s \"%s\">' % (self.resp.status, self.reason)\n\n  __str__ = __repr__\n\n\nclass UnexpectedMethodError(Error):\n  \"\"\"Exception raised by RequestMockBuilder on unexpected calls.\"\"\"\n\n  @util.positional(1)\n  def __init__(self, methodId=None):\n    \"\"\"Constructor for an UnexpectedMethodError.\"\"\"\n    super(UnexpectedMethodError, self).__init__(\n        'Received unexpected call %s' % methodId)\n\n\nclass UnexpectedBodyError(Error):\n  \"\"\"Exception raised by RequestMockBuilder on unexpected bodies.\"\"\"\n\n  def __init__(self, expected, provided):\n    \"\"\"Constructor for an UnexpectedMethodError.\"\"\"\n    super(UnexpectedBodyError, self).__init__(\n        'Expected: [%s] - Provided: [%s]' % (expected, provided))\n", "path": "googleapiclient/errors.py"}]}