bite 128

Author: [email protected]

.gitignore

@@ -15,3 +15,4 @@
 /66/README.md
 /117/README.md
 /64/README.md
+/128/README.md

128/dt_convert.py

@@ -0,0 +1,25 @@
+from datetime import datetime
+
+THIS_YEAR = 2018
+
+
+def years_ago(date):
+    """Receives a date string of 'DD MMM, YYYY', for example: 8 Aug, 2015
+       Convert this date str to a datetime object (use strptime).
+       Then extract the year from the obtained datetime object and subtract
+       it from the THIS_YEAR constant above, returning the int difference.
+       So in this example you would get: 2018 - 2015 = 3"""
+    date = datetime.strptime(date, "%d %b, %Y")
+    return THIS_YEAR-date.year
+
+
+def convert_eu_to_us_date(date):
+    """Receives a date string in European format of dd/mm/yyyy, e.g. 11/03/2002
+       Convert it to an American date: mm/dd/yyyy (in this case 03/11/2002).
+       To enforce the use of datetime's strptime / strftime (over slicing)
+       the tests check if a ValueError is raised for invalid day/month/year
+       ranges (no need to code this, datetime does this out of the box)"""
+    datex = datetime.strptime(date, "%d/%m/%Y")
+    return datex.strftime("%m/%d/%Y")
+
+# print(convert_eu_to_us_date("02/02/2002"))

128/test_dt_convert.py

@@ -0,0 +1,38 @@
+import pytest
+
+from dt_convert import years_ago, convert_eu_to_us_date
+
+
+def test_years_ago():
+    assert years_ago('8 Aug, 2015') == 3
+    assert years_ago('6 Sep, 2014') == 4
+    assert years_ago('1 Oct, 2010') == 8
+    assert years_ago('31 Dec, 1958') == 60
+
+
+def test_years_ago_wrong_input():
+    with pytest.raises(ValueError):
+        # Sept != valid %b value 'Sep'
+        assert years_ago('6 Sept, 2014') == 4
+
+
+def test_convert_eu_to_us_date():
+    assert convert_eu_to_us_date('11/03/2002') == '03/11/2002'
+    assert convert_eu_to_us_date('18/04/2008') == '04/18/2008'
+    assert convert_eu_to_us_date('12/12/2014') == '12/12/2014'
+    assert convert_eu_to_us_date('1/3/2004') == '03/01/2004'
+
+
+def test_convert_eu_to_us_date_invalid_day():
+    with pytest.raises(ValueError):
+        convert_eu_to_us_date('41/03/2002')
+
+
+def test_convert_eu_to_us_date_invalid_month():
+    with pytest.raises(ValueError):
+        convert_eu_to_us_date('11/13/2002')
+
+
+def test_convert_eu_to_us_date_invalid_year():
+    with pytest.raises(ValueError):
+        convert_eu_to_us_date('11/13/year')