From e35f80372f283b81333a8260b07905848ea5f37d Mon Sep 17 00:00:00 2001
From: Timotej Lazar <timotej.lazar@araneo.org>
Date: Mon, 31 Aug 2015 15:44:29 +0200
Subject: Add the first Python problem definition

---
 .../introduction/fahrenheit_to_celsius/common.py   | 43 ++++++++++++++++++++++
 .../introduction/fahrenheit_to_celsius/en.py       | 18 +++++++++
 .../introduction/fahrenheit_to_celsius/sl.py       | 32 ++++++++++++++++
 3 files changed, 93 insertions(+)
 create mode 100644 python/problems/introduction/fahrenheit_to_celsius/common.py
 create mode 100644 python/problems/introduction/fahrenheit_to_celsius/en.py
 create mode 100644 python/problems/introduction/fahrenheit_to_celsius/sl.py

diff --git a/python/problems/introduction/fahrenheit_to_celsius/common.py b/python/problems/introduction/fahrenheit_to_celsius/common.py
new file mode 100644
index 0000000..a13687d
--- /dev/null
+++ b/python/problems/introduction/fahrenheit_to_celsius/common.py
@@ -0,0 +1,43 @@
+# coding=utf-8
+
+id = 180
+group = 'introduction'
+number = 1
+visible = True
+
+solution = '''\
+f = float(input("Temperatura [F]: "))
+ c = 5/9 * (f – 32)
+print("Temperatura je", c, "C")
+'''
+
+from python.engine import run
+from python.util import has_token_sequence
+
+def test(code):
+    # List of inputs: (expression to eval, stdin).
+    test_in = [
+        (None, '0\n'),
+        (None, '100\n'),
+    ]
+    test_out = [
+        '-17.7',
+        '37.7',
+    ]
+
+    # List of outputs: (expression result, stdout, stderr, exception).
+    answers = run(code=code, inputs=test_in, timeout=1.0)
+    outputs = [ans[1] for ans in answers['results']]
+
+    n_correct = 0
+    for output, correct in zip(outputs, test_out):
+        if correct in output:
+            n_correct += 1
+    return n_correct, len(test_in)
+
+def hint(code):
+    if not code:
+        return [{'id': 'plan'}]
+    if not has_token_sequence(code, ['input']):
+        return [{'id': 'no_input_call'}]
+    return None
diff --git a/python/problems/introduction/fahrenheit_to_celsius/en.py b/python/problems/introduction/fahrenheit_to_celsius/en.py
new file mode 100644
index 0000000..a2af212
--- /dev/null
+++ b/python/problems/introduction/fahrenheit_to_celsius/en.py
@@ -0,0 +1,18 @@
+# coding=utf-8
+
+id = 180
+name = 'Converting Fahrenheit to Celsius'
+slug = 'Converting Fahrenheit to Celsius'
+
+description = '''\
+<p>Write a program that reads a temperature in degrees Fahrenheit from the
+user, and prints the same temperature converted to degrees Celsius. The
+conversion formula is C = 5/9 (F – 32).</p>'''
+
+hint = {
+    'plan': '''\
+<p>(translation missing)</p>''',
+
+    'no_input_call': '''\
+<p>(translation missing)</p>''',
+}
diff --git a/python/problems/introduction/fahrenheit_to_celsius/sl.py b/python/problems/introduction/fahrenheit_to_celsius/sl.py
new file mode 100644
index 0000000..f13037c
--- /dev/null
+++ b/python/problems/introduction/fahrenheit_to_celsius/sl.py
@@ -0,0 +1,32 @@
+# coding=utf-8
+
+id = 180
+name = 'Pretvarjanje iz Fahrenheitov v Celzije'
+slug = 'Pretvarjanje iz Fahrenheitov v Celzije'
+
+description = '''\
+<p>Napiši program, ki mu uporabnik vpiše temperaturo v Fahrenheitovih
+stopinjah, program pa jo izpiše v Celzijevih. Med temperaturama pretvarjamo po
+formuli C = 5/9 (F – 32).</p>'''
+
+hint = {
+    'plan' = '''\
+<p>Za začetek lahko razdelimo program na 3 dele:</p>
+<ol>
+  <li>Vprašanje za temperaturo v Fahrenheitih (F = ?).</li>
+  <li>Izračun temperature v Celzijih: C = 5/9 (F – 32)</li>
+  <li>Izpis temperature v Celzijih (izpiši C).</li>
+</ol>''',
+
+    'no_input_call' = '''\
+<p>Uporabnika lahko nekaj vprašamo s funkcijo <code>input</code>. Funkcija
+<code>input</code> sprejme kot argument niz (<em>angl.</em> string), ki se
+prikaže uporabniku kot vprašanje in vrne niz, ki ga je uporabnik napisal. Nize
+zapisujemo v narekovaje (lahko so enojni ali dvojni). Npr., naslednja
+vrstica:</p>
+<pre>
+ime = input("Kako ti je ime?")
+</pre>
+<p>pokliče funkcijo <code>input</code>, ki povpraša uporabnika po imenu in si
+shrani uporabnikov odgovor v spremenljivko <code>ime</code>.</p>''',
+}
-- 
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