python語法練習 python基本語法練習

2021-10-19 03:44:22 字數 2508 閱讀 5182

1、列印九九乘法表

#只列印結果

for i in range(1,10):

for j in range(1,i+1):

print(i*j,end=" ")

print()

#列印算數表示式

for i in range(1,10):

for j in range(1,i+1):

print("* = ".format(j,i,i*j),end=" ")

print()

1*1 = 1

1*2 = 2 2*2 = 4

1*3 = 3 2*3 = 6 3*3 = 9

1*4 = 4 2*4 = 8 3*4 = 12 4*4 = 16

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

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

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

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

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

#將列印矩陣轉置一下

for i in range(1,10):

print(" " *10*(i-1), end = " ")

for j in range(i,10):

print("* = ".format(i,j,i*j),end=" ")

print()

1*1 = 1 1*2 = 2 1*3 = 3 1*4 = 4 1*5 = 5 1*6 = 6 1*7 = 7 1*8 = 8 1*9 = 9

2*2 = 4 2*3 = 6 2*4 = 8 2*5 = 10 2*6 = 12 2*7 = 14 2*8 = 16 2*9 = 18

3*3 = 9 3*4 = 12 3*5 = 15 3*6 = 18 3*7 = 21 3*8 = 24 3*9 = 27

4*4 = 16 4*5 = 20 4*6 = 24 4*7 = 28 4*8 = 32 4*9 = 36

5*5 = 25 5*6 = 30 5*7 = 35 5*8 = 40 5*9 = 45

6*6 = 36 6*7 = 42 6*8 = 48 6*9 = 54

7*7 = 49 7*8 = 56 7*9 = 63

8*8 = 64 8*9 = 72

9*9 = 81

2、列印乙個菱形(行數為奇數行)

for i in range(-3,4):

prespace=(-i if i<0 else i)

print(" "*prespace + '*'*(7-2*prespace))

#變形之列印一道閃電

while true:

line_max = int(input("please input a odd number: "))

if line_max % 2:

break

range_num = (line_max + 1)//2

for i in range(-range_num+1,range_num):

if i == 0:

print('*'*line_max)

elif i > 0:

print(' '*(range_num-1) + "*"*(range_num-i))

else:

print(' '*(-i) + '*'*(range_num+i))

#變形之列印掏空的菱形

for i in range(-4,5):

if i == -4 or i == 4:

print('*'*9)

else:

prespace=(-i+1 if i<0 else i+1)

print("*"*prespace + ' '*(9-2*prespace) + "*"*prespace)

3、列印100以內的斐波那契數列

f0, f1 = 0, 1

while f1 <= 100:

print(f1, end = " ")

t = f1

f1 = t + f0

f0 = t

暫時還不理解的寫法:

f0, f1 = 0, 1

while f1 <= 100:

print(f1)

f0, f1 = f1, f0 + f1 #python對這樣的賦值怎樣處理

4、求斐波那契數列第101項

f0, f1 = 0, 1

for i in range(3,102):

t = f1

f1 = t + f0

f0 = t

else:

print(f1)

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