exercise7 more printing

print "Mary had a little lamb."print "Its fleece was white as %s." % 'snow'print "And everywhere that Mary went."print "." * 10   输出10 个.end1 = "C"end2 = "h"end3 = "e"end4 = "e"end5 = "s"end6 = "e"end7 = "B"end8 = "u"end9 = "r"end10 = "g"end11 = "e"end12 = "r"print end1+end2+end3+end4+end5+end6,print end7+end8+end9+end10+end11+end12

输出 Cheese Burger

print end1+end2+end3+end4+end5+end6print end7+end8+end9+end10+end11+end12

没有逗号的 输出 Cheese

      Burger

正常情况下python的print都是没有标点符号的，然而加上逗号后 输出中间多一个空格