CLN: isort imports- util dir
Signed-off-by: alimcmaster1 <alimcmaster1@gmail.com>

util directory/.py files in pandas directory.

- [x] xref #23334 
- [ ] tests added / passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

Hello @alimcmaster1! Thanks for submitting the PR.

 - There are no PEP8 issues in the file [`pandas/_version.py`](https://github.com/alimcmaster1/pandas/blob/9795a6cc11343b2beb2703bfab309e103d6ef1c8/pandas/_version.py) !

 - There are no PEP8 issues in the file [`pandas/conftest.py`](https://github.com/alimcmaster1/pandas/blob/9795a6cc11343b2beb2703bfab309e103d6ef1c8/pandas/conftest.py) !

 - There are no PEP8 issues in the file [`pandas/lib.py`](https://github.com/alimcmaster1/pandas/blob/9795a6cc11343b2beb2703bfab309e103d6ef1c8/pandas/lib.py) !

 - There are no PEP8 issues in the file [`pandas/parser.py`](https://github.com/alimcmaster1/pandas/blob/9795a6cc11343b2beb2703bfab309e103d6ef1c8/pandas/parser.py) !

 - There are no PEP8 issues in the file [`pandas/testing.py`](https://github.com/alimcmaster1/pandas/blob/9795a6cc11343b2beb2703bfab309e103d6ef1c8/pandas/testing.py) !

 - There are no PEP8 issues in the file [`pandas/tslib.py`](https://github.com/alimcmaster1/pandas/blob/9795a6cc11343b2beb2703bfab309e103d6ef1c8/pandas/tslib.py) !

 - There are no PEP8 issues in the file [`pandas/util/_decorators.py`](https://github.com/alimcmaster1/pandas/blob/9795a6cc11343b2beb2703bfab309e103d6ef1c8/pandas/util/_decorators.py) !

 - There are no PEP8 issues in the file [`pandas/util/_depr_module.py`](https://github.com/alimcmaster1/pandas/blob/9795a6cc11343b2beb2703bfab309e103d6ef1c8/pandas/util/_depr_module.py) !

 - There are no PEP8 issues in the file [`pandas/util/_doctools.py`](https://github.com/alimcmaster1/pandas/blob/9795a6cc11343b2beb2703bfab309e103d6ef1c8/pandas/util/_doctools.py) !

 - There are no PEP8 issues in the file [`pandas/util/_print_versions.py`](https://github.com/alimcmaster1/pandas/blob/9795a6cc11343b2beb2703bfab309e103d6ef1c8/pandas/util/_print_versions.py) !

 - There are no PEP8 issues in the file [`pandas/util/_test_decorators.py`](https://github.com/alimcmaster1/pandas/blob/9795a6cc11343b2beb2703bfab309e103d6ef1c8/pandas/util/_test_decorators.py) !

 - There are no PEP8 issues in the file [`pandas/util/decorators.py`](https://github.com/alimcmaster1/pandas/blob/9795a6cc11343b2beb2703bfab309e103d6ef1c8/pandas/util/decorators.py) !

 - There are no PEP8 issues in the file [`pandas/util/testing.py`](https://github.com/alimcmaster1/pandas/blob/9795a6cc11343b2beb2703bfab309e103d6ef1c8/pandas/util/testing.py) !

 Any chance a core dev - could restart the 3.6 build on Travis. ( Or grant me the relevant permission so I can do this myself going forward - happy to discuss this offline if appropriate )

I seem to be getting this:
`The job exceeded the maximum time limit for jobs, and has been terminated` Restarted. LMK if it times out again and I'll take a closer look. # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23331?src=pr&el=h1) Report
> Merging [#23331](https://codecov.io/gh/pandas-dev/pandas/pull/23331?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/a2e599499667b256bc5b8b13a75f0601eccfd432?src=pr&el=desc) will **not change** coverage.
> The diff coverage is `96.77%`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/23331/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/23331?src=pr&el=tree)

```diff
@@           Coverage Diff           @@
##           master   #23331   +/-   ##
=======================================
  Coverage   92.18%   92.18%           
=======================================
  Files         161      161           
  Lines       51184    51184           
=======================================
  Hits        47185    47185           
  Misses       3999     3999
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.62% <96.77%> (ø)` | :arrow_up: |
| #single | `42.23% <96.77%> (ø)` | :arrow_up: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/23331?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/util/\_depr\_module.py](https://codecov.io/gh/pandas-dev/pandas/pull/23331/diff?src=pr&el=tree#diff-cGFuZGFzL3V0aWwvX2RlcHJfbW9kdWxlLnB5) | `0% <0%> (ø)` | :arrow_up: |
| [pandas/util/\_doctools.py](https://codecov.io/gh/pandas-dev/pandas/pull/23331/diff?src=pr&el=tree#diff-cGFuZGFzL3V0aWwvX2RvY3Rvb2xzLnB5) | `12.87% <100%> (ø)` | :arrow_up: |
| [pandas/util/\_decorators.py](https://codecov.io/gh/pandas-dev/pandas/pull/23331/diff?src=pr&el=tree#diff-cGFuZGFzL3V0aWwvX2RlY29yYXRvcnMucHk=) | `91.34% <100%> (ø)` | :arrow_up: |
| [pandas/util/\_print\_versions.py](https://codecov.io/gh/pandas-dev/pandas/pull/23331/diff?src=pr&el=tree#diff-cGFuZGFzL3V0aWwvX3ByaW50X3ZlcnNpb25zLnB5) | `15.71% <100%> (ø)` | :arrow_up: |
| [pandas/util/testing.py](https://codecov.io/gh/pandas-dev/pandas/pull/23331/diff?src=pr&el=tree#diff-cGFuZGFzL3V0aWwvdGVzdGluZy5weQ==) | `86.84% <100%> (ø)` | :arrow_up: |
| [pandas/util/\_test\_decorators.py](https://codecov.io/gh/pandas-dev/pandas/pull/23331/diff?src=pr&el=tree#diff-cGFuZGFzL3V0aWwvX3Rlc3RfZGVjb3JhdG9ycy5weQ==) | `93.24% <100%> (ø)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23331?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23331?src=pr&el=footer). Last update [a2e5994...7baa169](https://codecov.io/gh/pandas-dev/pandas/pull/23331?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 pls merge master. and ping on green. needs another merge of master can you merge master, we just updated the isort cfg ping - @jreback merged master and now green thanks @alimcmaster1 keep em coming! Thanks @jreback !


On Tue, 30 Oct 2018 at 12:25, Jeff Reback <notifications@github.com> wrote:

> Merged #23331 <https://github.com/pandas-dev/pandas/pull/23331> into
> master.
>
> —
> You are receiving this because you were mentioned.
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> <https://github.com/pandas-dev/pandas/pull/23331#event-1934883194>, or mute
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