[FRONTEND] Expand __init__ * imports, add __all__ (#912)

Expand `from .foo import *` to full listings, and `__all__` sections.

This reifies the module export listings, which is useful for code
importing this module; without this, clients will need special `mypy`
control pragmas for this library.

This removes a number of `# flake8` control pragmas.

Verified with `flake8`

python/triton/__init__.py

@@ -1,15 +1,50 @@
 """isort:skip_file"""
-# flake8: noqa: F401
 __version__ = '2.0.0'
 
+# ---------------------------------------
+# Note: import order is significant here.
+
 # TODO: torch needs to be imported first
 # or pybind11 shows `munmap_chunk(): invalid pointer`
-import torch
+import torch  # noqa: F401
+
 # submodules
-from .utils import *
+from .utils import (
-from .runtime import Config, autotune, heuristics, JITFunction, KernelInterface
+    cdiv,
+    MockTensor,
+    next_power_of_2,
+    reinterpret,
+    TensorWrapper,
+)
+from .runtime import (
+    autotune,
+    Config,
+    heuristics,
+    JITFunction,
+    KernelInterface,
+)
 from .runtime.jit import jit
 from .compiler import compile, CompilationError
 from . import language
 from . import testing
 from . import ops
+
+__all__ = [
+    "autotune",
+    "cdiv",
+    "CompilationError",
+    "compile",
+    "Config",
+    "heuristics",
+    "jit",
+    "JITFunction",
+    "KernelInterface",
+    "language",
+    "MockTensor",
+    "next_power_of_2",
+    "ops",
+    "reinterpret",
+    "runtime",
+    "TensorWrapper",
+    "testing",
+]

python/triton/language/__init__.py

@@ -1,4 +1,171 @@
-# flake8: noqa: F401
+"""isort:skip_file"""
+# Import order is significant here.
+
+from triton._C.libtriton.triton import ir
+
 from . import core, extern, libdevice, random
-from .core import *
+from .core import (
-from .random import *
+    abs,
+    arange,
+    argmin,
+    argmax,
+    atomic_add,
+    atomic_and,
+    atomic_cas,
+    atomic_max,
+    atomic_min,
+    atomic_or,
+    atomic_xchg,
+    atomic_xor,
+    bfloat16,
+    block_type,
+    builtin,
+    cat,
+    cdiv,
+    constexpr,
+    cos,
+    debug_barrier,
+    dot,
+    dtype,
+    exp,
+    fdiv,
+    float16,
+    float32,
+    float64,
+    float8,
+    function_type,
+    int1,
+    int16,
+    int32,
+    int64,
+    int8,
+    load,
+    log,
+    max,
+    max_contiguous,
+    maximum,
+    min,
+    minimum,
+    multiple_of,
+    num_programs,
+    pi32_t,
+    pointer_type,
+    printf,
+    program_id,
+    ravel,
+    sigmoid,
+    sin,
+    softmax,
+    sqrt,
+    store,
+    sum,
+    swizzle2d,
+    tensor,
+    trans,
+    triton,
+    uint16,
+    uint32,
+    uint64,
+    uint8,
+    umulhi,
+    void,
+    where,
+    xor_sum,
+    zeros,
+    zeros_like,
+)
+from .random import (
+    pair_uniform_to_normal,
+    philox,
+    philox_impl,
+    rand,
+    rand4x,
+    randint,
+    randint4x,
+    randn,
+    randn4x,
+    uint32_to_uniform_float,
+)
+
+
+__all__ = [
+    "abs",
+    "arange",
+    "argmin",
+    "argmax",
+    "atomic_add",
+    "atomic_and",
+    "atomic_cas",
+    "atomic_max",
+    "atomic_min",
+    "atomic_or",
+    "atomic_xchg",
+    "atomic_xor",
+    "bfloat16",
+    "block_type",
+    "builtin",
+    "cat",
+    "cdiv",
+    "constexpr",
+    "cos",
+    "debug_barrier",
+    "dot",
+    "dtype",
+    "exp",
+    "fdiv",
+    "float16",
+    "float32",
+    "float64",
+    "float8",
+    "function_type",
+    "int1",
+    "int16",
+    "int32",
+    "int64",
+    "int8",
+    "ir",
+    "load",
+    "log",
+    "max",
+    "max_contiguous",
+    "maximum",
+    "min",
+    "minimum",
+    "multiple_of",
+    "num_programs",
+    "pair_uniform_to_normal",
+    "philox",
+    "philox_impl",
+    "pi32_t",
+    "pointer_type",
+    "printf",
+    "program_id",
+    "rand",
+    "rand4x",
+    "randint",
+    "randint4x",
+    "randn",
+    "randn4x",
+    "ravel",
+    "sigmoid",
+    "sin",
+    "softmax",
+    "sqrt",
+    "store",
+    "sum",
+    "swizzle2d",
+    "tensor",
+    "trans",
+    "triton",
+    "uint16",
+    "uint32",
+    "uint32_to_uniform_float",
+    "uint64",
+    "uint8",
+    "umulhi",
+    "void",
+    "where",
+    "xor_sum",
+    "zeros",
+    "zeros_like",
+]

python/triton/ops/__init__.py

@@ -1,5 +1,12 @@
-# flake8: noqa: F401
 # from .conv import _conv, conv
 from . import blocksparse
 from .cross_entropy import _cross_entropy, cross_entropy
 from .matmul import _matmul, matmul
+
+__all__ = [
+    "blocksparse",
+    "_cross_entropy",
+    "cross_entropy",
+    "_matmul",
+    "matmul",
+]

python/triton/ops/blocksparse/__init__.py

@@ -1,3 +1,7 @@
-# flake8: noqa: F401
 from .matmul import matmul
 from .softmax import softmax
+
+__all__ = [
+    "matmul",
+    "softmax",
+]

python/triton/runtime/__init__.py

@@ -1,2 +1,12 @@
-from .autotuner import Config, Heuristics, autotune, heuristics  # noqa: F401
+from .autotuner import Config, Heuristics, autotune, heuristics
-from .jit import JITFunction, KernelInterface, version_key  # noqa: F401
+from .jit import JITFunction, KernelInterface, version_key
+
+__all__ = [
+    "Config",
+    "Heuristics",
+    "autotune",
+    "heuristics",
+    "JITFunction",
+    "KernelInterface",
+    "version_key",
+]