本文整理汇总了Python中csvvalidator.CSVValidator.add_record_predicate方法的典型用法代码示例。如果您正苦于以下问题：Python CSVValidator.add_record_predicate方法的具体用法？Python CSVValidator.add_record_predicate怎么用？Python CSVValidator.add_record_predicate使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类csvvalidator.CSVValidator的用法示例。
在下文中一共展示了CSVValidator.add_record_predicate方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_record_predicates
# 需要导入模块: from csvvalidator import CSVValidator [as 别名]
# 或者: from csvvalidator.CSVValidator import add_record_predicate [as 别名]
def test_record_predicates():
"""Test the use of record predicates."""
field_names = ('foo', 'bar')
validator = CSVValidator(field_names)
def foo_gt_bar(r):
return int(r['foo']) > int(r['bar']) # expect record will be a dictionary
validator.add_record_predicate(foo_gt_bar) # use default code and message
def foo_gt_2bar(r):
return int(r['foo']) > 2 * int(r['bar'])
validator.add_record_predicate(foo_gt_2bar, 'X4', 'custom message')
data = (
('foo', 'bar'),
('7', '3'), # valid
('5', '3'), # invalid - not foo_gt_2bar
('1', '3') # invalid - both predicates false
)
problems = validator.validate(data)
n = len(problems)
assert n == 3, n
row3_problems = [p for p in problems if p['row'] == 3]
assert len(row3_problems) == 1
p = row3_problems[0]
assert p['code'] == 'X4'
assert p['message'] == 'custom message'
assert p['record'] == ('5', '3')
row4_problems = [p for p in problems if p['row'] == 4]
assert len(row4_problems) == 2
row4_problems_default = [p for p in row4_problems if p['code'] == RECORD_PREDICATE_FALSE]
assert len(row4_problems_default) == 1
p = row4_problems_default[0]
assert p['message'] == MESSAGES[RECORD_PREDICATE_FALSE]
assert p['record'] == ('1', '3')
row4_problems_custom = [p for p in row4_problems if p['code'] == 'X4']
assert len(row4_problems_custom) == 1
p = row4_problems_custom[0]
assert p['message'] == 'custom message'
assert p['record'] == ('1', '3')示例2: test_context
# 需要导入模块: from csvvalidator import CSVValidator [as 别名]
# 或者: from csvvalidator.CSVValidator import add_record_predicate [as 别名]
def test_context():
"""Test passing in of context information."""
field_names = ('foo', 'bar')
validator = CSVValidator(field_names)
def foo_gt_bar(r):
return int(r['foo']) > int(r['bar'])
validator.add_record_predicate(foo_gt_bar)
data = (
('foo', 'bar'),
('7', '3'), # valid
('1', '3') # invalid
)
context = {'info': 'file X'}
problems = validator.validate(data, context=context)
n = len(problems)
assert n == 1, n
p = problems[0]
assert p['context'] == context示例3: test_limit
# 需要导入模块: from csvvalidator import CSVValidator [as 别名]
# 或者: from csvvalidator.CSVValidator import add_record_predicate [as 别名]
def test_limit():
"""Test the use of the limit option."""
field_names = ('foo', 'bar')
validator = CSVValidator(field_names)
def foo_gt_bar(r):
return int(r['foo']) > int(r['bar'])
validator.add_record_predicate(foo_gt_bar)
data = (
('foo', 'bar'),
('7', '3'), # valid
('1', '3'), # invalid
('2', '3') # invalid
)
problems = validator.validate(data, limit=1)
n = len(problems)
assert n == 1, n
problems = validator.validate(data)
n = len(problems)
assert n == 2, n示例4: test_summarize
# 需要导入模块: from csvvalidator import CSVValidator [as 别名]
# 或者: from csvvalidator.CSVValidator import add_record_predicate [as 别名]
def test_summarize():
"""Test use of summarize option."""
field_names = ('foo', 'bar')
validator = CSVValidator(field_names)
def foo_gt_bar(r):
return int(r['foo']) > int(r['bar'])
validator.add_record_predicate(foo_gt_bar)
data = (
('foo', 'bar'),
('7', '3'), # valid
('1', '3') # invalid
)
problems = validator.validate(data, summarize=True)
n = len(problems)
assert n == 1, n
p = problems[0]
assert p['code'] == RECORD_PREDICATE_FALSE
for k in ('message', 'row', 'record'):
assert k not in p示例5: test_exception_handling
# 需要导入模块: from csvvalidator import CSVValidator [as 别名]
# 或者: from csvvalidator.CSVValidator import add_record_predicate [as 别名]
def test_exception_handling():
"""Establish expectations for exception handling."""
field_names = ('foo', 'bar')
validator = CSVValidator(field_names)
validator.add_value_check('foo', int)
def buggy_value_check(v):
"""I am a buggy value check."""
raise Exception('something went wrong')
validator.add_value_check('bar', buggy_value_check)
def buggy_value_predicate(v):
"""I am a buggy value predicate."""
raise Exception('something went wrong')
validator.add_value_predicate('bar', buggy_value_predicate)
def buggy_record_check(r):
"""I am a buggy record check."""
raise Exception('something went wrong')
validator.add_record_check(buggy_record_check)
def buggy_record_predicate(r):
"""I am a buggy record predicate."""
raise Exception('something went wrong')
validator.add_record_predicate(buggy_record_predicate)
def buggy_assert(r):
"""I am a buggy assert."""
raise Exception('something went wrong')
validator.assert_something_buggy = buggy_assert
def buggy_check(r):
"""I am a buggy check."""
raise Exception('something went wrong')
validator.check_something_buggy = buggy_check
def buggy_each(r):
"""I am a buggy each."""
raise Exception('something went wrong')
validator.each_something_buggy = buggy_each
def buggy_finally_assert():
"""I am a buggy finally assert."""
raise Exception('something went wrong')
validator.finally_assert_something_buggy = buggy_finally_assert
def buggy_skip(record):
"""I am a buggy skip."""
raise Exception('something went wrong')
validator.add_skip(buggy_skip)
data = (
('foo', 'bar'),
('ab', '56')
)
problems = validator.validate(data, report_unexpected_exceptions=False)
n = len(problems)
assert n == 1, n
p = problems[0]
assert p['row'] == 2
problems = validator.validate(data) # by default, exceptions are reported as problems
n = len(problems)
assert n == 10, n
unexpected_problems = [p for p in problems if p['code'] == UNEXPECTED_EXCEPTION]
assert len(unexpected_problems) == 9
for p in unexpected_problems:
e = p['exception']
assert e.args[0] == 'something went wrong', e.args