Add basic functionality tests for the Python bit.

tests/basics/run-tests

+#!/bin/bash
+
+RM="/bin/rm -f"
+CPYTHON3=python3
+MP_PY=../../unix/py
+
+numtests=0
+numpassed=0
+numfailed=0
+namefailed=
+
+for infile in tests/*.py
+do
+    basename=`basename $infile .c`
+    outfile=${basename}.out
+    expfile=${basename}.exp
+
+    $CPYTHON3 -B $infile > $expfile
+    $MP_PY $infile > $outfile
+
+    diff --brief $expfile $outfile > /dev/null
+
+    if [ $? -eq 0 ]
+    then
+        echo "pass  $infile"
+        $RM $outfile
+        $RM $expfile
+        numpassed=`expr $numpassed + 1`
+    else
+        echo "FAIL  $infile"
+        numfailed=`expr $numfailed + 1`
+        namefailed="$namefailed $basename"
+    fi
+
+    numtests=`expr $numtests + 1`
+done
+
+echo "$numtests tests performed"
+echo "$numpassed tests passed"
+if [ $numfailed -ne 0 ]
+then
+    echo "$numfailed tests failed -$namefailed"
+fi

tests/basics/tests/0prelim.py

+# all tests need print to work! make sure it does work
+
+print(1)
+print('abc')

tests/basics/tests/builtin-len1.py

+# builtin len
+
+print(len(()))
+print(len((1,)))
+print(len((1, 2)))
+
+print(len([]))
+x = [1, 2, 3]
+print(len(x))
+
+f = len
+print(f({}))
+print(f({1:2, 3:4}))

tests/basics/tests/class1.py

+# basic class
+
+def go():
+    class C:
+        def f():
+            print(1)
+
+        def g(self):
+            print(2)
+
+        def set(self, value):
+            self.value = value
+
+        def print(self):
+            print(self.value)
+
+    C.f()
+    C()
+    C().g()
+
+    o = C()
+    o.set(3)
+    o.print()
+
+    C.set(o, 4)
+    C.print(o)
+
+go()

tests/basics/tests/class2.py

+# class with __init__
+
+class C1:
+    def __init__(self):
+        self.x = 1
+
+c1 = C1()
+print(c1.x)
+
+class C2:
+    def __init__(self, x):
+        self.x = x
+
+c2 = C2(4)
+print(c2.x)

tests/basics/tests/comprehension1.py

+def f():
+    # list comprehension
+
+    print([a + 1 for a in range(5)])
+    print([(a, b) for a in range(3) for b in range(2)])
+    print([a * 2 for a in range(7) if a > 3])
+
+    print([a for a in [1, 3, 5]])
+    print([a for a in [a for a in range(4)]])
+
+    # dict comprehension
+
+    d = {a : 2 * a for a in range(5)}
+    print(d[0], d[1], d[2], d[3], d[4])
+
+    # set comprehension
+
+    print({a for a in range(5)})
+
+f()

tests/basics/tests/dict1.py

+# basic dictionary
+
+d = {}
+print(d)
+d[2] = 123
+print(d)
+d = {1:2}
+d[3] = 3
+print(d)
+d[1] = 0
+print(d)
+print(d[1])
+
+x = 1
+while x < 1000:
+    d[x] = x
+    x += 1
+print(d[500])

tests/basics/tests/dict2.py

+# using strings as keys in dict
+
+d = {'1': 1, '2': 2}
+print(d['1'], d['2'])
+
+d['3'] = 3
+print(d['1'], d['2'], d['3'])
+
+d['2'] = 222
+print(d['1'], d['2'], d['3'])

tests/basics/tests/float1.py

+# basic float
+x = 1 / 2
+print(x)

tests/basics/tests/for1.py

+# basic for loop
+
+def f():
+    for x in range(2):
+        for y in range(2):
+            for z in range(2):
+                print(x, y, z)
+
+f()

tests/basics/tests/fun1.py

+# calling a function
+
+def f():
+    print(1)
+f()

tests/basics/tests/fun2.py

+# calling a function from a function
+
+def f(x):
+    print(x + 1)
+
+def g(x):
+    f(2 * x)
+    f(4 * x)
+
+g(3)

tests/basics/tests/fun3.py

+# function with large number of arguments
+
+def fun(a, b, c, d, e, f, g):
+    return a + b + c * d + e * f * g
+
+print(fun(1, 2, 3, 4, 5, 6, 7))

tests/basics/tests/generator1.py

+def f(x):
+    print('a')
+    y = x
+    print('b')
+    while y > 0:
+        print('c')
+        y -= 1
+        print('d')
+        yield y
+        print('e')
+    print('f')
+    return None
+
+for val in f(3):
+    print(val)
+
+#gen = f(3)
+#print(gen)
+#print(gen.__next__())
+#print(gen.__next__())
+#print(gen.__next__())
+#print(gen.__next__())

tests/basics/tests/lambda1.py

+# lambda
+
+f = lambda x, y: x + 3 * y
+print(f(3, 5))

tests/basics/tests/list1.py

+# basic list functionality
+x = [1, 2, 3 * 4]
+print(x)
+x[0] = 4
+print(x)
+x[1] += -4
+print(x)
+x.append(5)
+print(x)
+f = x.append
+f(4)
+print(x)

tests/basics/tests/set1.py

+# basic sets
+
+s = {1}
+print(s)
+
+s = {3, 4, 3, 1}
+print(s)

tests/basics/tests/string1.py

+# basic strings
+
+x = 'abc'
+print(x)
+
+x += 'def'
+print(x)
+
+print('123' + "456")

tests/basics/tests/try1.py

+# basic exceptions
+x = 1
+try:
+    x.a()
+except:
+    print(x)

tests/basics/tests/try2.py

+# nested try's
+
+try:
+    print("try 1")
+    try:
+        print("try 2")
+        foo()
+    except:
+        print("except 2")
+    bar()
+except:
+    print("except 1")