Improve version checking code

sherlock/__main__.py

@@ -11,17 +11,10 @@ import sys
 
 
 if __name__ == "__main__":
-    # Checking if the user is using the correct version of Python
-    # Reference:
-    #  If Python version is 3.6.5
-    #               major --^
-    #               minor ----^
-    #               micro ------^
-    major = sys.version_info[0]
-    minor = sys.version_info[1]
+    """Check if the user is using the correct version of Python"""
+    python_version = sys.version.split()[0]
 
-    if major != 3 or major == 3 and minor < 6:
-        python_version = str(major) + "." + str(minor) + "." + str(sys.version_info[2])
+    if sys.version_info < (3, 6):
         print("Sherlock requires Python 3.6+\nYou are using Python %s, which is not supported by Sherlock" % (python_version))
         sys.exit(1)