mbed-cli should use an explicit python version in subrsocess calls

This commit ensures that all calls to python are explicitly python2

Author: brmoran

mbed/mbed.py

@@ -916,7 +916,7 @@ def fromrepo(cls, path=None):
 
         repo.path = os.path.abspath(path)
         repo.name = os.path.basename(repo.path)
-        
+
         cache_cfg = Global().get_cfg('CACHE', '')
         if cache_repositories and cache_cfg and cache_cfg != 'none' and cache_cfg != 'off' and cache_cfg != 'disabled':
             loc = cache_cfg if (cache_cfg and cache_cfg != 'on' and cache_cfg != 'enabled') else None
@@ -2175,7 +2175,7 @@ def compile_(toolchain=None, target=None, profile=False, compile_library=False,
         source = [os.path.relpath(program.path, orig_path)]
 
     if supported:
-        popen(['python', '-u', os.path.join(tools_dir, 'make.py')]
+        popen(['python2', '-u', os.path.join(tools_dir, 'make.py')]
               + (['-S'] if supported else []) + (['-v'] if very_verbose else [])
               + (['--app-config', app_config] if app_config else [])
               + args,
@@ -2188,7 +2188,7 @@ def compile_(toolchain=None, target=None, profile=False, compile_library=False,
 
     if compile_config:
         # Compile configuration
-        popen(['python', os.path.join(tools_dir, 'get_config.py')]
+        popen(['python2', os.path.join(tools_dir, 'get_config.py')]
               + ['-t', tchain, '-m', target]
               + list(chain.from_iterable(izip(repeat('--profile'), profile or [])))
               + list(chain.from_iterable(izip(repeat('--source'), source)))
@@ -2199,15 +2199,15 @@ def compile_(toolchain=None, target=None, profile=False, compile_library=False,
         # If the user hasn't supplied a build directory, ignore the default build directory
         if not build:
             program.ignore_build_dir()
-        
+
         build_path = build
 
         if compile_library:
             # Compile as a library (current dir is default)
             if not build_path:
                 build_path = os.path.join(os.path.relpath(program.path, orig_path), program.build_dir, 'libraries', os.path.basename(orig_path), target, tchain)
 
-            popen(['python', '-u', os.path.join(tools_dir, 'build.py')]
+            popen(['python2', '-u', os.path.join(tools_dir, 'build.py')]
                   + list(chain.from_iterable(izip(repeat('-D'), macros)))
                   + ['-t', tchain, '-m', target]
                   + list(chain.from_iterable(izip(repeat('--profile'), profile or [])))
@@ -2223,7 +2223,7 @@ def compile_(toolchain=None, target=None, profile=False, compile_library=False,
             if not build_path:
                 build_path = os.path.join(os.path.relpath(program.path, orig_path), program.build_dir, target, tchain)
 
-            popen(['python', '-u', os.path.join(tools_dir, 'make.py')]
+            popen(['python2', '-u', os.path.join(tools_dir, 'make.py')]
                   + list(chain.from_iterable(izip(repeat('-D'), macros)))
                   + ['-t', tchain, '-m', target]
                   + list(chain.from_iterable(izip(repeat('--profile'), profile or [])))
@@ -2292,7 +2292,7 @@ def test_(toolchain=None, target=None, compile_list=False, run_list=False, compi
             test_spec = os.path.join(build_path, 'test_spec.json')
 
         if compile_list:
-            popen(['python', '-u', os.path.join(tools_dir, 'test.py'), '--list']
+            popen(['python2', '-u', os.path.join(tools_dir, 'test.py'), '--list']
                   + list(chain.from_iterable(izip(repeat('--profile'), profile or [])))
                   + ['-t', tchain, '-m', target]
                   + list(chain.from_iterable(izip(repeat('--source'), source)))
@@ -2307,7 +2307,7 @@ def test_(toolchain=None, target=None, compile_list=False, run_list=False, compi
             if not build:
                 program.ignore_build_dir()
 
-            popen(['python', '-u', os.path.join(tools_dir, 'test.py')]
+            popen(['python2', '-u', os.path.join(tools_dir, 'test.py')]
                   + list(chain.from_iterable(izip(repeat('-D'), macros)))
                   + list(chain.from_iterable(izip(repeat('--profile'), profile or [])))
                   + ['-t', tchain, '-m', target]
@@ -2364,7 +2364,7 @@ def export(ide=None, target=None, source=False, clean=False, supported=False):
     env = program.get_env()
 
     if supported:
-        popen(['python', '-u', os.path.join(tools_dir, 'project.py')]
+        popen(['python2', '-u', os.path.join(tools_dir, 'project.py')]
               + (['-S'] if supported else []) + (['-v'] if very_verbose else []),
               env=env)
         return
@@ -2377,10 +2377,10 @@ def export(ide=None, target=None, source=False, clean=False, supported=False):
 
     if not source or len(source) == 0:
         source = [os.path.relpath(program.path, orig_path)]
-    
+
     program.ignore_build_dir()
 
-    popen(['python', '-u', os.path.join(tools_dir, 'project.py')]
+    popen(['python2', '-u', os.path.join(tools_dir, 'project.py')]
           + list(chain.from_iterable(izip(repeat('-D'), macros)))
           + ['-i', ide.lower()]
           + ['-m', target]
@@ -2412,7 +2412,7 @@ def detect():
         # Prepare environment variables
         env = program.get_env()
 
-        popen(['python', '-u', os.path.join(tools_dir, 'detect_targets.py')]
+        popen(['python2', '-u', os.path.join(tools_dir, 'detect_targets.py')]
               + args,
               env=env)
     else: