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circuitpython/tests/basics/namedtuple1.py

82 lines
1.4 KiB

try:
try:
from collections import namedtuple
except ImportError:
from ucollections import namedtuple
except ImportError:
import sys
print("SKIP")
sys.exit()
T = namedtuple("Tup", ["foo", "bar"])
# CPython prints fully qualified name, what we don't bother to do so far
#print(T)
for t in T(1, 2), T(bar=1, foo=2):
print(t)
print(t[0], t[1])
print(t.foo, t.bar)
print(len(t))
print(bool(t))
print(t + t)
print(t * 3)
print([f for f in t])
print(isinstance(t, tuple))
try:
t[0] = 200
except TypeError:
print("TypeError")
try:
t.bar = 200
except AttributeError:
print("AttributeError")
try:
t = T(1)
except TypeError:
print("TypeError")
try:
t = T(1, 2, 3)
except TypeError:
print("TypeError")
try:
t = T(foo=1)
except TypeError:
print("TypeError")
try:
t = T(1, foo=1)
except TypeError:
print("TypeError")
# enough args, but kw is wrong
try:
t = T(1, baz=3)
except TypeError:
print("TypeError")
# bad argument for member spec
try:
namedtuple('T', 1)
except TypeError:
print("TypeError")
# Try single string
T3 = namedtuple("TupComma", "foo bar")
t = T3(1, 2)
print(t.foo, t.bar)
# Try tuple
T4 = namedtuple("TupTuple", ("foo", "bar"))
t = T4(1, 2)
print(t.foo, t.bar)
# Try single string with comma field separator
# Not implemented so far
#T2 = namedtuple("TupComma", "foo,bar")
#t = T2(1, 2)