Merge pull request JelteF#184 from HassenPy/master

raise a descriptive error when no compiler is installed

pylatex/document.py

@@ -12,6 +12,7 @@
 from .base_classes import Environment, Command, Container, LatexObject, \
     UnsafeCommand
 from .package import Package
+from .errors import CompilerError
 from .utils import dumps_list, rm_temp_dir, NoEscape
 import pylatex.config as cf
 
@@ -270,8 +271,12 @@ def generate_pdf(self, filepath=None, *, clean=True, clean_tex=True,
             break
 
         else:
-            # If none of the compilers worked, raise the last error
-            raise(os_error)
+            # Notify user that none of the compilers worked.
+            raise(CompilerError(
+                'No LaTex compiler was found\n' +
+                'Either specify a LaTex compiler ' +
+                'or make sure you have latexmk or pdfLaTex installed.'
+            ))
 
         os.chdir(cur_dir)
 

pylatex/errors.py

@@ -11,6 +11,10 @@ class PyLaTeXError(Exception):
     """A Base class for all PyLaTeX Exceptions."""
 
 
+class CompilerError(PyLaTeXError):
+    """A Base class for all PyLaTeX compiler related Exceptions."""
+
+
 class TableError(PyLaTeXError):
     """A Base class for all errors concerning tables."""