Docs: Continue stdlib coverage (dataclasses–doctest)

Co-Authored-By: Codex <codex@openai.com>

Author: heikkitoivonen

docs/stdlib/dataclasses.md

@@ -14,6 +14,15 @@ The `dataclasses` module provides a decorator to automatically generate special
 | `replace()` | O(n) | O(n) | Creates new instance |
 | `asdict()` | O(n*m) | O(n*m) | n = fields, m = nesting depth; recursive |
 | `astuple()` | O(n*m) | O(n*m) | n = fields, m = nesting depth; recursive |
+| `fields()` | O(n) | O(n) | n = number of fields |
+| `field()` | O(1) | O(1) | Field factory |
+| `make_dataclass()` | O(n) | O(n) | n = number of fields |
+| `is_dataclass()` | O(1) | O(1) | Type check |
+| `Field` | O(1) | O(1) | Field descriptor |
+| `InitVar` | O(1) | O(1) | Init-only variable wrapper |
+| `KW_ONLY` | O(1) | O(1) | Keyword-only marker |
+| `MISSING` | O(1) | O(1) | Sentinel for no default |
+| `FrozenInstanceError` | O(1) | O(1) | Exception type |
 
 ## Basic Dataclass
 

docs/stdlib/datetime.md

@@ -35,6 +35,7 @@ The `datetime` module provides classes for manipulating dates and times.
 | `date.timetuple()` | O(1) | O(1) | time.struct_time |
 | `date.toordinal()` | O(1) | O(1) | Proleptic Gregorian ordinal |
 | `date.replace(year=...)` | O(1) | O(1) | Return new date |
+| `date.__format__(fmt)` | O(n) | O(n) | Format string length n |
 
 ## Datetime Operations
 
@@ -50,6 +51,16 @@ The `datetime` module provides classes for manipulating dates and times.
 | `datetime.dst()` | O(1) | O(1) | Daylight saving offset |
 | `datetime.tzname()` | O(1) | O(1) | Timezone name string |
 | `datetime.utcoffset()` | O(1) | O(1) | UTC offset as timedelta |
+| `datetime.astimezone()` | O(1) | O(1) | Convert between timezones |
+| `datetime.now(tz)` | O(1) | O(1) | Current datetime in tz |
+| `datetime.utcnow()` | O(1) | O(1) | Current UTC datetime |
+| `datetime.utcfromtimestamp(ts)` | O(1) | O(1) | From timestamp (UTC) |
+| `datetime.fromtimestamp(ts, tz)` | O(1) | O(1) | From timestamp with tz |
+| `datetime.replace(...)` | O(1) | O(1) | New datetime with fields replaced |
+| `datetime.timetuple()` | O(1) | O(1) | time.struct_time |
+| `datetime.ctime()` | O(1) | O(1) | C-style string |
+| `datetime.isoformat()` | O(1) | O(1) | ISO 8601 string |
+| `datetime.__format__()` | O(n) | O(n) | Format string length n |
 
 ## Time Operations
 
@@ -63,6 +74,7 @@ The `datetime` module provides classes for manipulating dates and times.
 | `time.dst()` | O(1) | O(1) | Daylight saving offset |
 | `time.tzname()` | O(1) | O(1) | Timezone name string |
 | `time.utcoffset()` | O(1) | O(1) | UTC offset as timedelta |
+| `time.fold` | O(1) | O(1) | Attribute access |
 
 ## Timedelta Operations
 
@@ -73,6 +85,26 @@ The `datetime` module provides classes for manipulating dates and times.
 | `td1 + td2` | O(1) | O(1) | Add durations |
 | `td1 - td2` | O(1) | O(1) | Subtract durations |
 | `td * n` | O(1) | O(1) | Multiply duration |
+| `td / n` | O(1) | O(1) | Divide duration |
+| `td // n` | O(1) | O(1) | Floor divide duration |
+| `abs(td)` | O(1) | O(1) | Absolute duration |
+| `-td` | O(1) | O(1) | Negate duration |
+
+## Timezone Utilities
+
+| Operation | Time | Space | Notes |
+|-----------|------|-------|-------|
+| `timezone(offset)` | O(1) | O(1) | Fixed offset tzinfo |
+| `timezone.utc` | O(1) | O(1) | UTC tzinfo singleton |
+| `UTC` | O(1) | O(1) | UTC tzinfo alias |
+| `tzinfo` | O(1) | O(1) | Abstract base for tzinfo |
+
+## Constants
+
+| Name | Time | Space | Notes |
+|------|------|-------|-------|
+| `MINYEAR` / `MAXYEAR` | O(1) | O(1) | Supported year bounds |
+| `datetime_CAPI` | O(1) | O(1) | C API capsule |
 
 ## Common Operations
 

docs/stdlib/dbm.md

@@ -13,6 +13,8 @@ The `dbm` module provides interfaces to various Unix database implementations, a
 | `key in db` | O(1) to O(log n) | O(1) | Backend-dependent |
 | `db.keys()` | O(n) | O(n) | Get all keys (slow) |
 | `db.close()` | O(n) | O(1) | Flush and close |
+| `whichdb()` | O(1) | O(1) | Detect backend type |
+| `error` | O(1) | O(1) | Exception type |
 
 ## DBM Variants
 

docs/stdlib/decimal.md

@@ -40,6 +40,17 @@ The `decimal` module provides support for decimal floating point arithmetic with
 | `next_plus()` / `next_minus()` | O(n) | O(n) | Next representable value |
 | `next_toward(other)` | O(n) | O(n) | Next value toward other |
 | `remainder_near(other)` | O(n²) | O(n) | IEEE remainder |
+| `getcontext()` | O(1) | O(1) | Get current context |
+| `setcontext(ctx)` | O(1) | O(1) | Set current context |
+| `localcontext([ctx])` | O(1) | O(1) | Context manager |
+| `Context()` | O(1) | O(1) | Create context |
+| `DecimalTuple` | O(1) | O(1) | Tuple of sign/digits/exponent |
+| `DefaultContext` / `BasicContext` / `ExtendedContext` | O(1) | O(1) | Predefined contexts |
+| `IEEEContext()` | O(1) | O(1) | IEEE 754 context |
+| Signals/flags | O(1) | O(1) | `Inexact`, `Rounded`, `Underflow`, `Overflow`, `Subnormal`, `Clamped` |
+| Exceptions | O(1) | O(1) | `DecimalException`, `InvalidOperation`, `DivisionByZero`, etc. |
+| Rounding modes | O(1) | O(1) | `ROUND_HALF_EVEN`, `ROUND_UP`, etc. |
+| Limits | O(1) | O(1) | `MAX_PREC`, `MAX_EMAX`, `MIN_EMIN`, `MIN_ETINY` |
 
 ## Creating Decimal Objects
 

docs/stdlib/difflib.md

@@ -14,6 +14,13 @@ The `difflib` module provides tools for comparing sequences (lists, strings) and
 | `unified_diff()` | O(n+m) | O(n+m) | Generate unified diff |
 | `context_diff()` | O(n+m) | O(n+m) | Generate context diff |
 | `ndiff()` | O(n+m) | O(n+m) | Generate detailed diff |
+| `diff_bytes()` | O(n+m) | O(n+m) | Generate diff over bytes |
+| `get_close_matches()` | O(n*m) | O(n) | n = possibilities, m = word length |
+| `restore()` | O(n) | O(n) | Reconstruct sequence from diff |
+| `Differ()` | O(1) | O(1) | Create differ |
+| `HtmlDiff()` | O(1) | O(1) | Create HTML differ |
+| `Match` | O(1) | O(1) | Named tuple for match blocks |
+| `IS_CHARACTER_JUNK` / `IS_LINE_JUNK` | O(1) | O(1) | Default junk filters |
 
 ## Sequence Matching
 

docs/stdlib/dis.md

@@ -9,6 +9,19 @@ The `dis` module provides tools to disassemble Python bytecode. It shows the low
 | `dis.dis()` | O(n) | O(n) | n = bytecode instructions |
 | `dis.get_instructions()` | O(n) | O(n) | Iterate bytecode |
 | Bytecode analysis | O(n) | O(1) | Single pass |
+| `dis.Bytecode()` | O(1) | O(1) | Create Bytecode wrapper |
+| `dis.code_info()` | O(n) | O(n) | Format code object metadata |
+| `dis.show_code()` | O(n) | O(n) | Print code metadata |
+| `dis.stack_effect()` | O(1) | O(1) | Stack effect for opcode |
+| `dis.findlinestarts()` | O(n) | O(n) | Map bytecode to lines |
+| `dis.findlabels()` | O(n) | O(n) | Find jump targets |
+| `dis.pretty_flags()` | O(n) | O(n) | Format compiler flags |
+| `dis.get_executor()` | O(1) | O(1) | Return current executor |
+| `dis.print_instructions()` | O(n) | O(n) | Print Instruction list |
+| `dis.disassemble()` | O(n) | O(n) | Disassemble code object |
+| `dis.disco()` / `dis.distb()` | O(n) | O(n) | Disassemble object/traceback |
+| `dis.main()` | O(n) | O(n) | CLI entrypoint |
+| `Instruction` / `Positions` | O(1) | O(1) | Named tuple types |
 
 ## Disassembling Functions
 

docs/stdlib/doctest.md

@@ -9,6 +9,18 @@ The `doctest` module finds and runs tests embedded in docstrings. It extracts ex
 | `doctest.testmod()` | O(n) | O(n) | n = docstring lines |
 | Example extraction | O(n) | O(n) | Parse docstrings |
 | Test execution | O(k) | O(1) | k = number of examples |
+| `testfile()` | O(n) | O(n) | n = file size |
+| `DocTestRunner()` | O(1) | O(1) | Runner setup |
+| `DocTestParser()` | O(1) | O(1) | Parser setup |
+| `DocTestFinder()` | O(n) | O(n) | Find doc tests in objects |
+| `run_docstring_examples()` | O(n) | O(1) | Execute examples |
+| `script_from_examples()` | O(n) | O(n) | Generate script from docs |
+| `testsource()` | O(n) | O(n) | Extract source from docstring |
+| `debug()` / `debug_script()` / `debug_src()` | O(n) | O(n) | Debug helpers |
+| `register_optionflag()` | O(1) | O(1) | Register option flag |
+| `set_unittest_reportflags()` | O(1) | O(1) | Configure unittest output |
+| `DocTest` / `Example` | O(1) | O(1) | Data structures |
+| `DocTestFailure` / `UnexpectedException` | O(1) | O(1) | Exception types |
 
 ## Running Doctests