NoReplacementField Class Reference

Public Member Functions
	__init__ (self, field_name, conversion=None, format_spec=None)
	__getattr__ (self, attr)
	__getitem__ (self, attr)
	compose (self)

Public Attributes
	field_name = field_name
	cached value of the field name
	conversion = conversion
	cached value of the conversion specifier
	format_spec = format_spec
	cached value of the format specifier

Detailed Description

This class serves as a placeholder for keys in not found during lookup into
keyword or positional arguments during a call to TolerateMissingKeyFormatter.

It records potential item and attribute lookups, conversion and format_spec to
reproduce original replacement_field entry into the formatted string.

Parameters
----------
field_name : str
    field_name part of the replacement_field specifier
conversion : str
    conversion part of the replacement_field specifier
format_spec : str%
    format_spec part of the replacement_field specifier

Notes
-----
replacement_field, field_name, conversion and format_spec have the meaning as outlined in
https://docs.python.org/2/library/string.html#format-string-syntax

Definition at line 13 of file tolerate_missing_key_formatter.py.

Constructor & Destructor Documentation

__init__()

__init__	(		self,
			field_name,
			conversion = None,
			format_spec = None )

Constructor

Definition at line 36 of file tolerate_missing_key_formatter.py.

    def __init__(self, field_name, conversion=None, format_spec=None):
        """Constructor"""
 
        ## cached value of the field name
        self.field_name = field_name
        ## cached value of the conversion specifier
        self.conversion = conversion
        ## cached value of the format specifier
        self.format_spec = format_spec
 

Member Function Documentation

__getattr__()

__getattr__	(		self,
			attr )

Record attribute lookup

Definition at line 46 of file tolerate_missing_key_formatter.py.

    def __getattr__(self, attr):
        """Record attribute lookup"""
        return NoReplacementField(self.field_name + "." + attr)
 

__getitem__()

__getitem__	(		self,
			attr )

Record item lookup

Definition at line 50 of file tolerate_missing_key_formatter.py.

    def __getitem__(self, attr):
        """Record item lookup"""
        return NoReplacementField(self.field_name + "[" + str(attr) + "]")
 

compose()

compose

(

self

)

Compose a replacement_field string equivalent to the original replacement_field in the string formatting.

Definition at line 54 of file tolerate_missing_key_formatter.py.

    def compose(self):
        """Compose a replacement_field string equivalent to the original replacement_field in the string formatting."""
        text_in_brackets = self.field_name
 
        if self.conversion is not None:
            text_in_brackets += "!" + self.conversion
 
        if self.format_spec is not None:
            text_in_brackets += ":" + self.format_spec
 
        replacement_field = "{" + text_in_brackets + "}"
        return replacement_field
 
 

Member Data Documentation

conversion

conversion = conversion

cached value of the conversion specifier

Definition at line 42 of file tolerate_missing_key_formatter.py.

field_name

field_name = field_name

cached value of the field name

Definition at line 40 of file tolerate_missing_key_formatter.py.

format_spec

format_spec = format_spec

cached value of the format specifier

Definition at line 44 of file tolerate_missing_key_formatter.py.

---

The documentation for this class was generated from the following file:

• tracking/scripts/tracking/validation/tolerate_missing_key_formatter.py