Python在字串中加入變數
阿新 • • 發佈:2019-01-29
有時候,我們需要在字串中加入相應的變數,以下提供了幾種字串加入變數的方法:
1、+ 連字元
name = 'zhangsan'
print('my name is '+name)
#結果為 my name is zhangsan
2、% 字元
name = 'zhangsan' age = 25 price = 4500.225 print('my name is %s'%(name)) print('i am %d'%(age)+' years old') print('my price is %f'%(price)) #保留指定位數小數(四捨五入) print('my price is %.2f'%(price)) 結果為 my name is zhangsan i am 25 years old my price is 4500.225000 my price is 4500.23
3、format()函式
對於變數較多的情況,加入加'+'或者'%'相對比較麻煩,這種情況下可以使用format函式name = 'zhangsan' age = 25 price = 4500.225 info = 'my name is {my_name},i am {my_age} years old,my price is {my_price}'\ .format(my_name=name,my_age=age,my_price=price) print(info) 結果為: my name is zhangsan,i am 25 years old,my price is 4500.225