transpose : Modified example.py to avoid exception

config.json

@@ -371,6 +371,12 @@
       "topics": [
       ]
     },
+    {
+      "slug": "transpose",
+      "difficulty": 1,
+      "topics": [
+      ]
+    },
     {
       "slug": "poker",
       "difficulty": 1,

exercises/transpose/example.py

@@ -0,0 +1,6 @@
+def transpose(input_lines):
+    lines = input_lines.split("\n")
+    zipped = map(list,
+                 [line.ljust(len(max(lines, key=len)))
+                  for line in lines])
+    return "\n".join("".join(line) for line in zip(*zipped)).strip()

exercises/transpose/transpose.py

@@ -0,0 +1,2 @@
+def transpose():
+    pass

exercises/transpose/transpose_test.py

@@ -0,0 +1,264 @@
+import unittest
+from transpose import transpose
+
+
+# test cases adapted from `x-common//canonical-data.json` @ version: 1.0.0
+
+class TransposeTests(unittest.TestCase):
+    def test_empty_string(self):
+        input_line = ""
+        expected = ""
+        self.assertEqual(
+            transpose(input_line),
+            expected
+        )
+
+    def test_two_characters_in_a_row(self):
+        self.assertEqual(
+            transpose("A1"),
+            "\n".join(["A", "1"])
+        )
+
+    def test_two_characters_in_a_column(self):
+        self.assertEqual(
+            transpose("\n".join(["A", "1"])),
+            "A1"
+        )
+
+    def test_simple(self):
+        input_line = [
+            "ABC",
+            "123"
+        ]
+        expected = [
+            "A1",
+            "B2",
+            "C3"
+        ]
+
+        self.assertEqual(
+            transpose("\n".join(input_line)),
+            "\n".join(expected)
+        )
+
+    def test_single_line(self):
+        input_line = ["Single line."]
+        expected = [
+            "S",
+            "i",
+            "n",
+            "g",
+            "l",
+            "e",
+            " ",
+            "l",
+            "i",
+            "n",
+            "e",
+            "."
+        ]
+        self.assertEqual(
+            transpose("\n".join(input_line)),
+            "\n".join(expected)
+        )
+
+    def test_first_line_longer_than_second_line(self):
+        input_line = [
+            "The fourth line.",
+            "The fifth line."
+        ]
+        expected = [
+            "TT",
+            "hh",
+            "ee",
+            "  ",
+            "ff",
+            "oi",
+            "uf",
+            "rt",
+            "th",
+            "h ",
+            " l",
+            "li",
+            "in",
+            "ne",
+            "e.",
+            "."
+        ]
+        self.assertEqual(
+            transpose("\n".join(input_line)),
+            "\n".join(expected)
+        )
+
+    def test_second_line_longer_than_first_line(self):
+        input_line = [
+            "The first line.",
+            "The second line."
+        ]
+        expected = [
+            "TT",
+            "hh",
+            "ee",
+            "  ",
+            "fs",
+            "ie",
+            "rc",
+            "so",
+            "tn",
+            " d",
+            "l ",
+            "il",
+            "ni",
+            "en",
+            ".e",
+            " ."
+        ]
+        self.assertEqual(
+            transpose("\n".join(input_line)),
+            "\n".join(expected)
+        )
+
+    def test_square(self):
+        input_line = [
+            "HEART",
+            "EMBER",
+            "ABUSE",
+            "RESIN",
+            "TREND"
+        ]
+        expected = [
+            "HEART",
+            "EMBER",
+            "ABUSE",
+            "RESIN",
+            "TREND"
+        ]
+        self.assertEqual(
+            transpose("\n".join(input_line)),
+            "\n".join(expected)
+        )
+
+    def test_rectangle(self):
+        input_line = [
+            "FRACTURE",
+            "OUTLINED",
+            "BLOOMING",
+            "SEPTETTE"
+        ]
+        expected = [
+            "FOBS",
+            "RULE",
+            "ATOP",
+            "CLOT",
+            "TIME",
+            "UNIT",
+            "RENT",
+            "EDGE"
+        ]
+        self.assertEqual(
+            transpose("\n".join(input_line)),
+            "\n".join(expected)
+        )
+
+    def test_triangle(self):
+        input_line = [
+            "T",
+            "EE",
+            "AAA",
+            "SSSS",
+            "EEEEE",
+            "RRRRRR"
+        ]
+        expected = [
+            "TEASER",
+            " EASER",
+            "  ASER",
+            "   SER",
+            "    ER",
+            "     R"
+        ]
+        self.assertEqual(
+            transpose("\n".join(input_line)),
+            "\n".join(expected)
+        )
+
+    def test_many_lines(self):
+        input_line = [
+            "Chor. Two households, both alike in dignity,",
+            "In fair Verona, where we lay our scene,",
+            "From ancient grudge break to new mutiny,",
+            "Where civil blood makes civil hands unclean.",
+            "From forth the fatal loins of these two foes",
+            "A pair of star-cross'd lovers take their life;",
+            "Whose misadventur'd piteous overthrows",
+            "Doth with their death bury their parents' strife.",
+            "The fearful passage of their death-mark'd love,",
+            "And the continuance of their parents' rage,",
+            "Which, but their children's end, naught could remove,",
+            "Is now the two hours' traffic of our stage;",
+            "The which if you with patient ears attend,",
+            "What here shall miss, our toil shall strive to mend."
+        ]
+        expected = [
+            "CIFWFAWDTAWITW",
+            "hnrhr hohnhshh",
+            "o oeopotedi ea",
+            "rfmrmash  cn t",
+            ".a e ie fthow ",
+            " ia fr weh,whh",
+            "Trnco miae  ie",
+            "w ciroitr btcr",
+            "oVivtfshfcuhhe",
+            " eeih a uote  ",
+            "hrnl sdtln  is",
+            "oot ttvh tttfh",
+            "un bhaeepihw a",
+            "saglernianeoyl",
+            "e,ro -trsui ol",
+            "h uofcu sarhu ",
+            "owddarrdan o m",
+            "lhg to'egccuwi",
+            "deemasdaeehris",
+            "sr als t  ists",
+            ",ebk 'phool'h,",
+            "  reldi ffd   ",
+            "bweso tb  rtpo",
+            "oea ileutterau",
+            "t kcnoorhhnatr",
+            "hl isvuyee'fi ",
+            " atv es iisfet",
+            "ayoior trr ino",
+            "l  lfsoh  ecti",
+            "ion   vedpn  l",
+            "kuehtteieadoe ",
+            "erwaharrar,fas",
+            "   nekt te  rh",
+            "ismdsehphnnosa",
+            "ncuse ra-tau l",
+            " et  tormsural",
+            "dniuthwea'g t ",
+            "iennwesnr hsts",
+            "g,ycoi tkrttet",
+            "n ,l r s'a anr",
+            "i  ef  'dgcgdi",
+            "t  aol   eoe,v",
+            "y  nei sl,u; e",
+            ",  .sf to l   ",
+            "     e rv d  t",
+            "     ; ie    o",
+            "       f, r   ",
+            "       e  e  m",
+            "       .  m  e",
+            "          o  n",
+            "          v  d",
+            "          e  .",
+            "          ,"
+        ]
+        self.assertEqual(
+            transpose("\n".join(input_line)),
+            "\n".join(expected)
+        )
+
+
+if __name__ == '__main__':
+    unittest.main()