Docs: Update stdlib fcntl-functools

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

Author: heikkitoivonen

COMPLETENESS_REVIEW_PROMPT.md

@@ -77,6 +77,7 @@ For each documented module or type:
 
 3. **Update documentation for gaps**
    - Add missing methods to the documentation with their complexity
+   - Do not add new documentation sections to existing files; update existing sections only
    - If a method is intentionally omitted, add a comment explaining why
 
 ## Example Review Process

docs/stdlib/fcntl.md

@@ -8,6 +8,8 @@ The `fcntl` module provides access to file control operations on Unix, including
 |-----------|------|-------|-------|
 | `flock()` | O(1) | O(1) | Acquire lock; blocks if contended (without LOCK_NB) |
 | `fcntl()` | O(1) | O(1) | File control operation |
+| `ioctl()` | O(1) | O(1) | Device-specific I/O control |
+| `lockf()` | O(1) | O(1) | POSIX record locking |
 
 ## File Locking and Control
 

docs/stdlib/filecmp.md

@@ -12,6 +12,8 @@ The `filecmp` module provides tools for comparing files and directories, with sh
 | `dircmp()` init | O(1) | O(1) | Create directory comparator |
 | `dircmp.report()` | O(k*n) | O(k) | k = files, n = avg size |
 | `dircmp.report_full_closure()` | O(k*d*n) | O(k*d) | Recursive, d = depth |
+| `clear_cache()` | O(1) | O(1) | Clear comparison cache |
+| `demo()` | O(1) | O(1) | Run module demo (I/O bound) |
 
 ## File Comparison
 

docs/stdlib/fileinput.md

@@ -11,7 +11,14 @@ The `fileinput` module provides an iterator for processing lines from multiple i
 | `filename()` | O(1) | O(1) | Get current file name |
 | `filelineno()` | O(1) | O(1) | Get current line in file |
 | `lineno()` | O(1) | O(1) | Get total line count |
+| `fileno()` | O(1) | O(1) | Get current file descriptor |
+| `isfirstline()` | O(1) | O(1) | Check first line of file |
+| `isstdin()` | O(1) | O(1) | Check if current file is stdin |
+| `nextfile()` | O(1) | O(1) | Skip to next file |
 | `close()` | O(1) | O(1) | Close file iterator |
+| `FileInput(...)` | O(1) | O(1) | Create iterator instance |
+| `hook_encoded()` | O(1) | O(1) | Encoding open hook factory |
+| `hook_compressed()` | O(1) | O(1) | Compressed-file open hook factory |
 
 ## Basic Line Iteration
 

docs/stdlib/fnmatch.md

@@ -10,6 +10,7 @@ The `fnmatch` module provides Unix filename pattern matching using shell-style w
 | `fnmatchcase()` | O(n) | O(1) | Case-sensitive version |
 | `filter()` | O(k*n) | O(k) | k = items, n = string length |
 | `translate()` | O(n) | O(n) | Convert pattern to regex |
+| `filterfalse()` | O(k*n) | O(k) | Invert filter results |
 
 ## Pattern Matching
 

docs/stdlib/fractions.md

@@ -11,6 +11,8 @@ The `fractions` module provides support for rational number arithmetic, maintain
 | `Fraction` comparison | O(1) | O(1) | Cross-multiplication (a*d vs b*c) |
 | `Fraction` conversion | O(log n) | O(1) | GCD for reduction |
 | `limit_denominator()` | O(k) | O(1) | k = max denominator |
+| `Fraction.from_float()` | O(log n) | O(1) | Convert float to exact fraction |
+| `Fraction.from_decimal()` | O(log n) | O(1) | Convert Decimal to exact fraction |
 
 ## Basic Usage
 

docs/stdlib/ftplib.md

@@ -9,6 +9,11 @@ The `ftplib` module implements FTP client functionality for transferring files t
 | `connect()` | O(1) | O(1) | TCP connection |
 | List files | O(n) | O(n) | n = files |
 | Transfer | O(n) | O(n) | n = file size |
+| `FTP()` | O(1) | O(1) | Create client (optional connect) |
+| `FTP_TLS()` | O(1) | O(1) | Create FTPS client |
+| `parse227()` | O(1) | O(1) | Parse PASV reply |
+| `parse229()` | O(1) | O(1) | Parse EPSV reply |
+| `parse257()` | O(n) | O(1) | Parse PWD reply |
 
 ## Connecting and Transferring Files
 

docs/stdlib/functools.md

@@ -11,6 +11,7 @@ The `functools` module provides higher-order functions and operations on callabl
 | `lru_cache(maxsize)` | O(1) avg hit, O(f(n)) miss | O(min(n, maxsize)) | Hit is O(1) avg (hash-based); miss runs wrapped function |
 | `cache()` | O(1) avg hit, O(f(n)) miss | O(n) unbounded | Hit is O(1) avg (hash-based); miss runs wrapped function |
 | `cached_property` | O(1) after first call | O(1) per property | Descriptor cache |
+| `get_cache_token()` | O(1) | O(1) | Token changes when cache state changes |
 
 ### Function Composition
 
@@ -21,6 +22,7 @@ The `functools` module provides higher-order functions and operations on callabl
 | `partialmethod(func, *args)` | O(1) | O(k) for k args | Partial for use as method descriptor |
 | `wraps(wrapped)` | O(1) | O(1) | Decorator to copy function metadata |
 | `update_wrapper(wrapper, wrapped)` | O(1) | O(1) | Copy function metadata (used by wraps) |
+| `recursive_repr()` | O(1) | O(1) | Prevent recursive __repr__ loops |
 
 ### Comparison Helpers
 
@@ -216,6 +218,7 @@ class MyClass:
         return sum(range(1000000))
 ```
 
+
 ## Performance Characteristics
 
 ### When to Use Cache
@@ -320,6 +323,7 @@ process(5)        # "Integer: 10"
 process([1,2,3])  # "List of 3 items"
 ```
 
+
 ## Version Notes
 
 - **Python 2.5+**: `reduce`, `partial`