'error while evaluating conditional' when trying to install pip for sudo

[Mike Kilmer]

Hi all and thanks in advance for your insights.

OSX Mavericks. Ansible 1.9.4

I've been refactoring an ansible script to work in an EC2 instance and am a bit stuck at trying to install pip for sudo user, so as to be able to install psycopg2 for postgres-python integration.

The portion of the Task that's causing the error is this:

- name: check to see if pip is already installed
  command: "{{ pip }} --version"
  ignore_errors: true
  changed_when: false
  register: pip_is_installed
  changed_when: false

- name: download pip
  get_url: url=https://bootstrap.pypa.io/get-pip.py dest={{ pip_download_dest }}
  when: pip_is_installed.rc != 0

- name: install pip
  command: "{{ python }} {{ pip_download_dest }}/get-pip.py"
  sudo: yes
  when: pip_is_installed.rc != 0

- name: delete get-pip.py
  file: state=absent path={{ pip_download_dest }}/get-pip.py
  when: pip_is_installed.rc != 0

# $ pip --version
# pip 1.5.2 from /usr/local/lib/python2.7/dist-packages (python 2.7)
- name: check to see if pip is installed at the correct version
  shell: "{{ pip }} --version | awk '{print $2}'"
  register: pip_installed_version
  changed_when: false
  when: pip_version != None or pip_version != "LATEST"

- name: install required version of pip
  command: "{{ pip }} install pip=={{ pip_version }}"
  sudo: yes
  when: pip_version != None and pip_installed_version.stdout != pip_version and pip_version != "LATEST"

- name: Upgrade to latest version of pip
  command: "{{ pip }} install -U pip"
  register: pip_latest_output
  sudo: yes
  changed_when: pip_latest_output.stdout.find('Requirement already up-to-date') == -1
  when: pip_version == None or pip_version == "LATEST"

- name: install psycopg2 python module
  sudo: yes
  pip: name=psycopg2

And the line in bold above seems to be causing an error:

`error while evaluating conditional: pip_latest_output.stdout.find('Requirement already up-to-date') == -1`

From what I'm reading on a couple of GitHub issue threads, this error message can sometimes be misleading.

One thing I'm a little bit unclear on is, Ansible is running on the local deploying computer and not on the deployed to computer, right? I don't believe ansible is installed on the remote EC2 OS.

The code looks fairly simple: if the output of running `sudo pip install -U pip` contains the string, 'Requirement already up-to-date', register as changed. Right?

[Markus Ellers]

Can you try running

debug: var = pip_latest_output

This might help getting to the bottom of it