Python raw_input和Bazel：EOFError：读一行时出现EOF

Question

I am attempting to use Bazel as the build system for a python program. I'll use an example of test.py. My BUILD file includes:

package(default_visibility = ["//visibility:public"])
py_binary(
    name = "test",
    srcs = [
        "test.py",
    ],
    main = "test.py",
    deps = []
)

My test.py includes:

name = raw_input("Please enter your name\n")

print "your name is {}".format(name)

When I run though normal compiler I get:

Please enter your name
python
your name is python

However, when I run as bazel run :test I get:

Traceback (most recent call last):
  File "[directory]test.[directory]python_test.py", line 1, in <module>
    name = raw_input("Please enter your name\n")
EOFError: EOF when reading a line
Please enter your name

Answer 1

Which version of bazel are you using? In older versions of bazel, the bazel client doesn't connect standard in to the binary when run with bazel run . In 0.12 and up you can pass --direct_run to connect standard in. In 0.15 this became the default and --direct_run is a noop.

You can also run the resulting binary itself (in your example if the build file is at the root of the workspace it would be bazel-bin/test )