refactor for readability

app/main.py

@@ -1,10 +1,8 @@
-import sys
-
 import click
 from click import ClickException
 
-from app.generate import generate_answers, generate_problems
 from app.config import BEGIN_ANSWERS_TOKEN
+from app.generate import generate_answers, generate_problems
 from app.pdf import make_pdf
 
 
@@ -24,6 +22,26 @@ def main(
     output_filepath: str = None,
 ) -> None:
 
+    validate_args(pdf, silent, output_filepath)
+
+    answers, problems = make_problems_and_answers(bits, num_problems)
+
+    if pdf:
+        make_pdf(
+            problems=problems,
+            answers=answers,
+            output_path=output_filepath or "problems.pdf",
+            include_answers=include_answers,
+        )
+
+    if not silent:
+        if include_answers:
+            click.echo(BEGIN_ANSWERS_TOKEN.join((problems, answers)))
+        else:
+            click.echo(problems)
+
+
+def validate_args(pdf, silent, output_filepath):
     if pdf and silent:
         raise ClickException(
             "please specify either `pdf` or `silent`, not both (otherwise there "
@@ -33,24 +51,12 @@ def main(
     if pdf and output_filepath and not output_filepath.endswith("pdf"):
         raise ClickException("Please include an output filepath ending in '.pdf'")
 
+
+def make_problems_and_answers(bits, num_problems):
     problems = generate_problems(bits, num_problems)
     answers = generate_answers(problems)
-
     problems_string = "\n\n".join(problems)
     answers_string = "\n\n".join(
         [f"{problem} | {answer} " for problem, answer in zip(problems, answers)]
     )
-
-    if pdf:
-        make_pdf(
-            problems=problems_string,
-            answers=answers_string,
-            output_path=output_filepath or "problems.pdf",
-            include_answers=include_answers,
-        )
-
-    if not silent:
-        if include_answers:
-            click.echo(BEGIN_ANSWERS_TOKEN.join((problems_string, answers_string)))
-        else:
-            click.echo(problems_string)
+    return answers_string, problems_string

app/pdf.py

@@ -2,6 +2,8 @@ import os
 import subprocess
 import tempfile
 
+POSTSCRIPT_FILEPATH = "tempfile.ps"
+
 
 def make_pdf(
     problems: str, answers: str, output_path: str, include_answers: bool
@@ -11,29 +13,32 @@ def make_pdf(
     else:
         pdf_jobs = ("problems", problems)
 
-    for job_name, job in pdf_jobs:
-
+    for job_name, text in pdf_jobs:
         if job_name == "answers":
-            path, filename = os.path.split(output_path)
-            new_filename = f"{filename.split('.pdf')[0]}-answers.pdf"
-            output_path = os.path.join(path, new_filename)
-
+            output_path = make_answers_path(output_path)
         with tempfile.NamedTemporaryFile(mode="w") as txt_file:
-            txt_file.write(job)
-            txt_file.flush()
+            write_to_txtfile(txt_file, text)
+            make_postscript_file(txt_file)
+            make_pdf_file(output_path)
+        os.unlink(POSTSCRIPT_FILEPATH)
 
-            command = (
-                f"enscript --columns=4 --no-header --output=tempfile.ps {txt_file.name}"
-            )
-            print(f"command: '{command}'")
 
-            output = subprocess.check_output(command, shell=True)
-            print(output)
+def make_answers_path(path):
+    path, filename = os.path.split(path)
+    new_filename = f"{filename.split('.pdf')[0]}-answers.pdf"
+    return os.path.join(path, new_filename)
 
-            command = f"ps2pdf tempfile.ps {output_path}"
-            print(f"command: '{command}'")
 
-            output = subprocess.check_output(command, shell=True)
-            print(output)
-        print("made pdf", output_path)
-        os.unlink("tempfile.ps")
+def write_to_txtfile(txt_file, text):
+    txt_file.write(text)
+    txt_file.flush()
+
+
+def make_pdf_file(output_path):
+    command = f"ps2pdf {POSTSCRIPT_FILEPATH} {output_path}"
+    subprocess.call(command, shell=True)
+
+
+def make_postscript_file(txt_file):
+    command = f"enscript --columns=4 --no-header --output={POSTSCRIPT_FILEPATH} {txt_file.name}"
+    subprocess.call(command, shell=True)