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print(','.join(()))
print(','.join(('a',)))
print(','.join(('a', 'b')))
print(','.join([]))
print(','.join(['a']))
print(','.join(['a', 'b']))
print(''.join(''))
print(''.join('abc'))
print(','.join('abc'))
print(','.join('abc' for i in range(5)))
print(b','.join([b'abc', b'123']))
try:
''.join(None)
except TypeError:
print("TypeError")
try:
print(b','.join(['abc', b'123']))
except TypeError:
print("TypeError")
try:
print(','.join([b'abc', b'123']))
except TypeError:
print("TypeError")
# joined by the compiler
print("a" "b")
print("a" '''b''')
print("a" # inline comment
"b")
print("a" \
"b")
# the following should not be joined by the compiler
x = 'a'
'b'
print(x)
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