18 logging level schemes:
20   * **cpp**: The C++ logging level scheme used in Abseil C++.
21   * **absl**: The absl.logging level scheme used in Abseil Python.
22   * **standard**: The python standard library logging level scheme.
26     LEVEL    | cpp |  absl  | standard |
44 or absl if those level schemes are absolutely necessary.
89 def get_initial_for_level(level):  argument
90   """Gets the initial that should start the log line for the given level.
94   * ``'I'`` when: ``level < STANDARD_WARNING``.
95   * ``'W'`` when: ``STANDARD_WARNING <= level < STANDARD_ERROR``.
96   * ``'E'`` when: ``STANDARD_ERROR <= level < STANDARD_CRITICAL``.
97   * ``'F'`` when: ``level >= STANDARD_CRITICAL``.
100     level: int, a Python standard logging level.
105   if level < STANDARD_WARNING:
107   elif level < STANDARD_ERROR:
109   elif level < STANDARD_CRITICAL:
115 def absl_to_cpp(level):  argument
116   """Converts an absl log level to a cpp log level.
119     level: int, an absl.logging level.
122     TypeError: Raised when level is not an integer.
125     The corresponding integer level for use in Abseil C++.
127   if not isinstance(level, int):
128     raise TypeError('Expect an int level, found {}'.format(type(level)))
129   if level >= 0:
133     return -level
136 def absl_to_standard(level):  argument
137   """Converts an integer level from the absl value to the standard value.
140     level: int, an absl.logging level.
143     TypeError: Raised when level is not an integer.
146     The corresponding integer level for use in standard logging.
148   if not isinstance(level, int):
149     raise TypeError('Expect an int level, found {}'.format(type(level)))
150   if level < ABSL_FATAL:
151     level = ABSL_FATAL
152   if level <= ABSL_DEBUG:
153     return ABSL_TO_STANDARD[level]
155   return STANDARD_DEBUG - level + 1
158 def string_to_standard(level):  argument
159   """Converts a string level to standard logging level value.
162     level: str, case-insensitive ``'debug'``, ``'info'``, ``'warning'``,
166     The corresponding integer level for use in standard logging.
168   return absl_to_standard(ABSL_NAMES.get(level.upper()))
171 def standard_to_absl(level):  argument
172   """Converts an integer level from the standard value to the absl value.
175     level: int, a Python standard logging level.
178     TypeError: Raised when level is not an integer.
181     The corresponding integer level for use in absl logging.
183   if not isinstance(level, int):
184     raise TypeError('Expect an int level, found {}'.format(type(level)))
185   if level < 0:
186     level = 0
187   if level < STANDARD_DEBUG:
189     return STANDARD_DEBUG - level + 1
190   elif level < STANDARD_INFO:
192   elif level < STANDARD_WARNING:
194   elif level < STANDARD_ERROR:
196   elif level < STANDARD_CRITICAL:
202 def standard_to_cpp(level):  argument
203   """Converts an integer level from the standard value to the cpp value.
206     level: int, a Python standard logging level.
209     TypeError: Raised when level is not an integer.
212     The corresponding integer level for use in cpp logging.
214   return absl_to_cpp(standard_to_absl(level))