#使用str.format()函式

#使用'{}'佔位符
print('I\'m {},{}'.format('Hongten','Welcome to my space!'))

print('#' * 40)

#也可以使用'{0}','{1}'形式的佔位符
print('{0},I\'m {1},my E-mail is {2}'.format('Hello','Mongo','[email protected]'))
#可以改變佔位符的位置
print('{1},I\'m {0},my E-mail is {2}'.format('Mongo','Hello','[email protected]
 
'))

print('#' * 40)

#使用'{name}'形式的佔位符
print('Hi,{name},{message}'.format(name = 'Tom',message = 'How old are you?'))

print('#' * 40)

#混合使用'{0}','{name}'形式
print('{0},I\'m {1},{message}'.format('Hello','Mongo',message = 'This is a test message!'))

print('#' * 40)

#下面進行格式控制
import math
print('The value of PI is approximately {}.'
 
.format(math.pi))
print('The value of PI is approximately {!r}.'.format(math.pi))
print('The value of PI is approximately {0:.3f}.'.format(math.pi))


table = {'Sjoerd': 4127, 'Jack': 4098, 'Dcab': 7678}
for name, phone in table.items():
    print('{0:10} ==> {1:10d}'.format(name, phone))


table = {'Sjoerd'
 
: 4127, 'Jack': 4098, 'Dcab': 8637678}
print('Jack: {0[Jack]:d}; Sjoerd: {0[Sjoerd]:d}; ''Dcab: {0[Dcab]:d}'.format(table))