What version are you running?
rbt --version

RBTools 0.7.4
What steps will reproduce the problem?
d:\work> rbt patch --px 4  --repository-type perforce -d 128385

What is the expected output? What do you see instead?
I get an error because the '4' is not being converted to an integer. See debug output below.  I edited clients/init.py to fix the problem:
--- broken.py   2016-03-07 09:26:28.137642200 -0800

+++ init.py 2016-03-07 09:26:45.392642200 -0800

@@ -194,7 +194,7 @@

             cmd.append('-R')
     if p_num >= 0:


cmd.append('-p%d' % p_num)
cmd.append('-p%d' % int(p_num))
 cmd.extend(['-i', six.text_type(patch_file)])





And now I get the desiered result:

Patch is being applied from request 128385 with diff revision 2.








Running: patch -p4 -i c:\users\sallan\appdata\local\temp\tmp7hrwbp



<file list left out>
Successfully applied patch.

What operating system are you using?
Windows 7
Attach the debug out from the command.
d:\work> rbt patch --px 4  --repository-type perforce -d 128385








RBTools 0.7.4

Python 2.7.2 (default, Jun 24 2011, 12:21:10) [MSC v.1500 32 bit (Intel)]

Running on Windows-7-6.1.7601-SP1

Home = C:\Users\sallan\AppData\Roaming

Current directory = d:\data-dev

Running: git version

Checking for a Perforce repository...

Running: p4 info

Running: diff --version

repository info: Path: XXXXXXX, Base path: None, Supports changesets: True

Making HTTP GET request to http://reviewboard/api/

Making HTTP GET request to http://reviewboard/api/review-requests/128385/diffs/

Cached response for HTTP GET http://reviewboard/api/review-requests/128385/diffs/ expired and was modified

Making HTTP GET request to http://reviewboard/api/review-requests/128385/diffs/2/

Cached response for HTTP GET http://reviewboard/api/review-requests/128385/diffs/2/ expired and was not modified

Making HTTP GET request to http://reviewboard/api/review-requests/128385/diffs/2/

Cached response for HTTP GET http://reviewboard/api/review-requests/128385/diffs/2/ expired and was not modified

Patch is being applied from request 128385 with diff revision 2.

Traceback (most recent call last):

  File "C:\Python27\Scripts\rbt-script.py", line 9, in <module>

    load_entry_point('RBTools==0.7.4', 'console_scripts', 'rbt')()

  File "C:\Python27\lib\site-packages\rbtools\commands\main.py", line 133, in main

    command.run_from_argv([RB_MAIN, command_name] + args)

  File "C:\Python27\lib\site-packages\rbtools\commands__init__.py", line 612, in run_from_argv

    exit_code = self.main(*args) or 0

  File "C:\Python27\lib\site-packages\rbtools\commands\patch.py", line 189, in main

    revert=self.options.revert_patch)

  File "C:\Python27\lib\site-packages\rbtools\commands\patch.py", line 101, in apply_patch

    base_dir, self.options.px, revert=revert)

  File "C:\Python27\lib\site-packages\rbtools\clients__init__.py", line 197, in apply_patch

    cmd.append('-p%d' % p_num)

TypeError: %d format: a number is required, not str



Please provide any additional information below.
I fixed it on my machine by editing rbtools/clients/init.py:

--- broken.py   2016-03-07 09:26:28.137642200 -0800

+++ init.py 2016-03-07 09:26:45.392642200 -0800

@@ -194,7 +194,7 @@

             cmd.append('-R')
     if p_num >= 0:


cmd.append('-p%d' % p_num)
cmd.append('-p%d' % int(p_num))
 cmd.extend(['-i', six.text_type(patch_file)])