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2

3

age = 29

print("my age is %d" %age)

#my age is 29

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2

3

name = "makes"

print("my name is %s" %name)

#my name is makes

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2

3

4

print("%6.3f" % 2.3)

#2.300

print("%f" %2.3)

#2.300000

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2

print("{}:{}".format('192.168.0.100',8888))

#192.168.0.100:8888

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2

print("{server}{1}:{0}".format(8888,'192.168.1.100',server='Web Server Info :'))

#Web Server Info :192.168.1.100:8888　　

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2

print("{0[0]}.{0[1]}".format(('baidu','com')))

#baidu.com　

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3

4

5

print("{0}*{1}={2:0>2}".format(3,2,2*3))

#3*2=06

print("{:*^30}".format('centered'))

#***********centered***********　

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3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

for i in range(1,10):

    a = 1

    while a <= i:

        print("{0}*{1}={2:0>2}".format(a,i,a*i),end="\t")

        a +=1

    print()

"""

1*1=01 

1*2=02  2*2=04 

1*3=03  2*3=06  3*3=09 

1*4=04  2*4=08  3*4=12  4*4=16 

1*5=05  2*5=10  3*5=15  4*5=20  5*5=25 

1*6=06  2*6=12  3*6=18  4*6=24  5*6=30  6*6=36 

1*7=07  2*7=14  3*7=21  4*7=28  5*7=35  6*7=42  7*7=49 

1*8=08  2*8=16  3*8=24  4*8=32  5*8=40  6*8=48  7*8=56  8*8=64 

1*9=09  2*9=18  3*9=27  4*9=36  5*9=45  6*9=54  7*9=63  8*9=72  9*9=81 

"""

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2

3

4

print("{:.3f}".format(2.1415))

#2.142

print("{:.10f}".format(3.1415))

#3.1415000000