Prints fixing in setup.py

setup.py

@@ -24,7 +24,8 @@ temp_dir = tempfile.gettempdir()
 
 
 def _print_error(msg):
-    sys.stderr.write("\n\nERROR: " + msg + "\n\n\n")
+    sys.stderr.write("\n\n" + error_color_start + "ERROR: " + msg + color_end + " \n\n\n ")
+    sys.stderr.flush()
 
 
 def which(program):
@@ -73,7 +74,7 @@ def deal_with_error_code(err_code, operation_name):
     if err_code != 0:
         _print_error("A non-zero error code was returned at operation: " +
                          str(operation_name) + ". Code returned is: " +
-                         str(err_code) + ". Exiting!\n")
+                         str(err_code) + ". Exiting!")
         sys.exit(1)
 
 
@@ -104,6 +105,7 @@ def clone_git_repository(dir, repos_link):
     print("Done cloning repository: " + repos_link)
 
 question_color_start = "\x1b[0;37;44m"
+error_color_start = "\x1b[0;37;41m"
 color_end = "\x1b[0m"
 
 def ask_openblas_optimization_level():
@@ -118,7 +120,8 @@ def ask_openblas_optimization_level():
     print("3) -Ofast")
     print("4) Keep the default")
     print("5) Skip compiling OpenBLAS and assume it exists in the system")
-    sys.stdout.write("Please enter the option number: ")
+    print(question_color_start + "Please enter the option number: " + color_end)
+    sys.stdout.flush()
     option_chosen = input()
     if option_chosen.replace(" ", "") == '1':
         return "-O2"
@@ -131,7 +134,7 @@ def ask_openblas_optimization_level():
     elif option_chosen.replace(" ", "") == '5':
         return "SKIPOPENBLAS"
     else:
-        raise IndexError("Error: An unknown option was entered")
+        raise IndexError(error_color_start + "Error: An unknown option was entered" + color_end)
 
 
 def ask_spintrum_optimization_level():
@@ -146,7 +149,8 @@ def ask_spintrum_optimization_level():
     print("3) -O2")
     print("4) -O3")
     print("5) -Ofast")
-    sys.stdout.write("Please enter the option number: ")
+    print(question_color_start + "Please enter the option number: " + color_end)
+    sys.stdout.flush()
     option_chosen = input("")
     if option_chosen.replace(" ", "") == '1':
         return "-g"
@@ -159,7 +163,7 @@ def ask_spintrum_optimization_level():
     elif option_chosen.replace(" ", "") == '5':
         return "-Ofast"
     else:
-        raise IndexError("Error: An unknown option was entered")
+        raise IndexError(error_color_start + "Error: An unknown option was entered" + color_end)
 
 
 def recursive_glob(rootdir, pattern='*'):
@@ -169,24 +173,8 @@ def recursive_glob(rootdir, pattern='*'):
             if fnmatch.fnmatch(filename, pattern)]
     return lst
 
-dir_name = "spintrum"
-lib_file = "lib/libspintrum.so"
 
-
+def get_openblas():
-class DependenciesBuilder(_build):
-    def run(self):
-        if sys.platform.startswith('win'):
-            _print_error("You cannot build Spintrum on Windows. It is not supported.")
-
-        python_version = float(str(sys.version_info[0]) + "." + str(sys.version_info[1]))
-        if python_version < 3.3:
-            _print_error("You must have python version >= 3.3 to use Spintrum")
-
-        check_programs_availability(["cmake","make","g++","gcc","gfortran","git","python3"])
-
-        print("Building Spintrum C/C++ extension prerequisites")
-
-        ########## get OpenBLAS
     openblas_dir = "3rdparty/OpenBLAS"
     openblas_dir_install = "spintrum/OpenBLAS_install"
     openblas_full_path = os.path.join(start_working_dir, openblas_dir)
@@ -198,7 +186,7 @@ class DependenciesBuilder(_build):
         clone_git_repository(openblas_full_path, openblas_git)
         if openblas_target_optimization != "":
             if not os.path.isdir(openblas_dir):
-                    _print_error("Cannot open expected OpenBLAS directory " + openblas_dir + "\n")
+                _print_error("Cannot open expected OpenBLAS directory " + openblas_dir)
                 sys.exit(1)
 
             makefiles_to_glob = os.path.join(openblas_dir, "Makefile*")
@@ -222,6 +210,28 @@ class DependenciesBuilder(_build):
         deal_with_error_code(install_openblas_err_code, "Installing OpenBLAS")
         os.chdir(start_working_dir)  # restore working dir
 
+
+dir_name = "spintrum"
+lib_file = "lib/libspintrum.so"
+
+
+class DependenciesBuilder(_build):
+    def run(self):
+        sys.stdout.flush()
+        sys.stderr.flush()
+        if sys.platform.startswith('win'):
+            _print_error("You cannot build Spintrum on Windows. It is not supported.")
+
+        python_version = float(str(sys.version_info[0]) + "." + str(sys.version_info[1]))
+        if python_version < 3.3:
+            _print_error("You must have python version >= 3.3 to use Spintrum")
+
+        check_programs_availability(["cmake","make","g++","gcc","gfortran","git","python3"])
+
+        print("Building Spintrum C/C++ extension prerequisites")
+
+        get_openblas()
+
         ############## get Polymath
         polymath_git = "https://git.afach.de/samerafach/Polymath"
         polymath_dir = "3rdparty/Polymath"
@@ -230,12 +240,12 @@ class DependenciesBuilder(_build):
 
         ############## build spintrum
         spintrum_optimization_target = ask_spintrum_optimization_level()
-        print("Building Spintrum")
+        print("Building Spintrum extension...")
         err_code = subprocess.call(["cmake . -DPythonInstallation=1 -DOptimizationLevel=" + spintrum_optimization_target], shell=True)
         deal_with_error_code(err_code, "CMaking spintrum")
         err_code = subprocess.call(["make"], shell=True)
         deal_with_error_code(err_code, "Making spintrum")
-        print("Done building spintrum.")
+        print("Done building spintrum extension.")
 
 
 setup(name='spintrum',