字串格式化，

字串格式化，

python字串格式化兩種方式：百分比符號方式、format方式

用百分比符號字串拼接

s = "i am %s , and i am %s" % ("an assassin", "a killer")print(s)s = "i am %s , age %d" % ("an assassin", 19)# %d 只能拼接數字print(s)#輸出結果：i am an assassin , and i am a killeri am an assassin , age 19

 

列印浮點數：

#列印浮點數s1 = "percent % f" % 99.62375187  #小數點後預設是六位s2 = "percent % .2f" % 99.587627138678  #可以修改幾位小數print(s1)print(s2)#輸出結果：percent  99.623752percent  99.59

 

列印百分比：

#列印百分百比s = "percent % .2f %%" % 99.62375187print(s)#輸出結果：percent  99.62 %

 

 

format

s = "i am {},age {},{}".format("reese", 20, "assassin")print(s)s = "i am {2},age {0},{1}".format("reese", 20, "assassin")print(s)#輸出結果：i am reese,age 20,assassini am assassin,age reese,20