[Lang] Fix python AST print format issues in python/taichi/lang/transformer.py

[gaocegege]

Test case:

ti.init(print_ir=True,print_preprocessed=True)
@ti.kernel
def func():
    (a, b) = (1, 2)
    print(a, b)

There are formatting inconsistencies between print_ir and print_preprocess. The output before the PR looks like:

[Taichi] version 0.8.1, llvm 10.0.0, commit cc2dd342, osx, python 3.7.9
[Taichi] Starting on arch=x64
Initial AST:
def func():
...
Preprocessed:
def func():
...
[I 09/30/21 16:42:14.133 16716489] [compile_to_offloads.cpp:operator()@22] [func_c4_0] Initial IR:
kernel {
...
[I 09/30/21 16:42:14.134 16716489] [compile_to_offloads.cpp:operator()@22] [func_c4_0] Lowered:
...

This PR is to make it consistent (with) logic here https://github.com/taichi-dev/taichi/blob/master/taichi/transforms/compile_to_offloads.cpp#L17:

[Taichi] version 0.8.1, llvm 10.0.0, commit cc2dd342, osx, python 3.7.9
[Taichi] Starting on arch=x64
[I 09/30/21 16:45:23.741 16718700] [transformer.py:print_ast@28] Initial AST:
def func():
...
[I 09/30/21 16:45:35.869 16719262] [transformer.py:print_ast@28] Preprocessed:
def func():
...
[I 09/30/21 16:42:14.133 16716489] [compile_to_offloads.cpp:operator()@22] [func_c4_0] Initial IR:
kernel {
...
[I 09/30/21 16:42:14.134 16716489] [compile_to_offloads.cpp:operator()@22] [func_c4_0] Lowered:
...

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[k-ye]

Thanks!

[gaocegege]

The CI https://github.com/taichi-dev/taichi/pull/3061/checks?check_run_id=3753886990 is canceled because of the timeout, what should I do to fix it?

[k-ye]

The CI https://github.com/taichi-dev/taichi/pull/3061/checks?check_run_id=3753886990 is canceled because of the timeout, what should I do to fix it?

That's a known problem... Just push something to retrigger it (I've already retriggered this time)

[gaocegege]

Gotcha, thanks for the information.

[gaocegege]

The Windows CI is flaky. I will retry again.

[gaocegege]

Finally, all tests are passed.