print('''
This is a very long string
It continues here.
And it's not over yet.
"Hello,world!"
Still here.''')

x = 1 + 2 \
    + 3 + 4
print(x)

print("abcd\n1234")
print("C:\\ProgramFile\\python")
print(r"C:\ProgramFile\python""\\")
# Python3中所有字符串都是Unicode字符串
print(u"Unicode字符串")
