# 输出一个字符串
print("Mary had a little lamb")
# 输出一个字符串，将字符串“snow”嵌入前面的字符串
print("Its fleece was white as {}.".format('snow'))
# 输出一个字符串
print("And everywhere that Mary went.")
# 输出10个句点，使用*运算符重载实现
print("." * 10)

# 定义12个（字符型/字符串型）变量
end1 = "c"
end2 = "h"
end3 = "e"
end4 = "e"
end5 = "s"
end6 = "e"
end7 = "b"
end8 = "ue"
end9 = "r"
end10 = "g"
end11 = "e"
end12 = "r"

# 输出由前六个变量拼接形成的字符串，以空格结尾
print(end1 + end2 + end3 + end4 + end5 + end6, end=' ')
# 输出由后六个变量拼接形成的字符串
print(end7 + end8 + end9 + end10 + end11 + end12)
