本文整理汇总了Python中copy.source_expressions方法的典型用法代码示例。如果您正苦于以下问题：Python copy.source_expressions方法的具体用法？Python copy.source_expressions怎么用？Python copy.source_expressions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copy的用法示例。
在下文中一共展示了copy.source_expressions方法的12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: as_sql
# 需要导入模块: import copy [as 别名]
# 或者: from copy import source_expressions [as 别名]
def as_sql(self, compiler, connection, function=None, template=None, arg_joiner=None, **extra_context):
connection.ops.check_expression_support(self)
sql_parts = []
params = []
for arg in self.source_expressions:
arg_sql, arg_params = compiler.compile(arg)
sql_parts.append(arg_sql)
params.extend(arg_params)
data = self.extra.copy()
data.update(**extra_context)
# Use the first supplied value in this order: the parameter to this
# method, a value supplied in __init__()'s **extra (the value in
# `data`), or the value defined on the class.
if function is not None:
data['function'] = function
else:
data.setdefault('function', self.function)
template = template or data.get('template', self.template)
arg_joiner = arg_joiner or data.get('arg_joiner', self.arg_joiner)
data['expressions'] = data['field'] = arg_joiner.join(sql_parts)
return template % data, params 示例2: as_sql
# 需要导入模块: import copy [as 别名]
# 或者: from copy import source_expressions [as 别名]
def as_sql(self, compiler, connection, function=None, template=None, arg_joiner=None, **extra_context):
connection.ops.check_expression_support(self)
sql_parts = []
params = []
for arg in self.source_expressions:
arg_sql, arg_params = compiler.compile(arg)
sql_parts.append(arg_sql)
params.extend(arg_params)
data = {**self.extra, **extra_context}
# Use the first supplied value in this order: the parameter to this
# method, a value supplied in __init__()'s **extra (the value in
# `data`), or the value defined on the class.
if function is not None:
data['function'] = function
else:
data.setdefault('function', self.function)
template = template or data.get('template', self.template)
arg_joiner = arg_joiner or data.get('arg_joiner', self.arg_joiner)
data['expressions'] = data['field'] = arg_joiner.join(sql_parts)
return template % data, params 开发者ID:PacktPublishing，项目名称:Hands-On-Application-Development-with-PyCharm，代码行数:22，代码来源:expressions.py
示例3: __init__
# 需要导入模块: import copy [as 别名]
# 或者: from copy import source_expressions [as 别名]
def __init__(self, *expressions, **extra):
output_field = extra.pop('output_field', None)
super(Func, self).__init__(output_field=output_field)
self.source_expressions = self._parse_expressions(*expressions)
self.extra = extra 示例4: __repr__
# 需要导入模块: import copy [as 别名]
# 或者: from copy import source_expressions [as 别名]
def __repr__(self):
args = self.arg_joiner.join(str(arg) for arg in self.source_expressions)
extra = ', '.join(str(key) + '=' + str(val) for key, val in self.extra.items())
if extra:
return "{}({}, {})".format(self.__class__.__name__, args, extra)
return "{}({})".format(self.__class__.__name__, args) 示例5: set_source_expressions
# 需要导入模块: import copy [as 别名]
# 或者: from copy import source_expressions [as 别名]
def set_source_expressions(self, exprs):
self.source_expressions = exprs 示例6: resolve_expression
# 需要导入模块: import copy [as 别名]
# 或者: from copy import source_expressions [as 别名]
def resolve_expression(self, query=None, allow_joins=True, reuse=None, summarize=False, for_save=False):
c = self.copy()
c.is_summary = summarize
for pos, arg in enumerate(c.source_expressions):
c.source_expressions[pos] = arg.resolve_expression(query, allow_joins, reuse, summarize, for_save)
return c 示例7: as_sql
# 需要导入模块: import copy [as 别名]
# 或者: from copy import source_expressions [as 别名]
def as_sql(self, compiler, connection, function=None, template=None):
connection.ops.check_expression_support(self)
sql_parts = []
params = []
for arg in self.source_expressions:
arg_sql, arg_params = compiler.compile(arg)
sql_parts.append(arg_sql)
params.extend(arg_params)
if function is None:
self.extra['function'] = self.extra.get('function', self.function)
else:
self.extra['function'] = function
self.extra['expressions'] = self.extra['field'] = self.arg_joiner.join(sql_parts)
template = template or self.extra.get('template', self.template)
return template % self.extra, params 示例8: __init__
# 需要导入模块: import copy [as 别名]
# 或者: from copy import source_expressions [as 别名]
def __init__(self, *expressions, output_field=None, **extra):
if self.arity is not None and len(expressions) != self.arity:
raise TypeError(
"'%s' takes exactly %s %s (%s given)" % (
self.__class__.__name__,
self.arity,
"argument" if self.arity == 1 else "arguments",
len(expressions),
)
)
super().__init__(output_field=output_field)
self.source_expressions = self._parse_expressions(*expressions)
self.extra = extra 示例9: __repr__
# 需要导入模块: import copy [as 别名]
# 或者: from copy import source_expressions [as 别名]
def __repr__(self):
args = self.arg_joiner.join(str(arg) for arg in self.source_expressions)
extra = dict(self.extra, **self._get_repr_options())
if extra:
extra = ', '.join(str(key) + '=' + str(val) for key, val in sorted(extra.items()))
return "{}({}, {})".format(self.__class__.__name__, args, extra)
return "{}({})".format(self.__class__.__name__, args) 示例10: __str__
# 需要导入模块: import copy [as 别名]
# 或者: from copy import source_expressions [as 别名]
def __str__(self):
return self.arg_joiner.join(str(arg) for arg in self.source_expressions) 示例11: __repr__
# 需要导入模块: import copy [as 别名]
# 或者: from copy import source_expressions [as 别名]
def __repr__(self):
args = self.arg_joiner.join(str(arg) for arg in self.source_expressions)
extra = {**self.extra, **self._get_repr_options()}
if extra:
extra = ', '.join(str(key) + '=' + str(val) for key, val in sorted(extra.items()))
return "{}({}, {})".format(self.__class__.__name__, args, extra)
return "{}({})".format(self.__class__.__name__, args) 示例12: __init__
# 需要导入模块: import copy [as 别名]
# 或者: from copy import source_expressions [as 别名]
def __init__(self, *expressions, **extra):
if self.arity is not None and len(expressions) != self.arity:
raise TypeError(
"'%s' takes exactly %s %s (%s given)" % (
self.__class__.__name__,
self.arity,
"argument" if self.arity == 1 else "arguments",
len(expressions),
)
)
output_field = extra.pop('output_field', None)
super(Func, self).__init__(output_field=output_field)
self.source_expressions = self._parse_expressions(*expressions)
self.extra = extra