图案形成：
练习：
1)
for row in range(5):
for col in range(5-row):
print(5-col,end=' ')
print()
输出：
5 4 3 2 1 5 4 3 2 5 4 3 5 4 5
2)
no = 1
for row in range(5):
for col in range(5-row):
print(no, end=' ')
no+=1
print()
输出：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
3)
for row in range(5):
for col in range(5-(row+1)):
print(col+1, end=' ')
print()
输出：
1 2 3 4 1 2 3 1 2 1
4)
for row in range(5):
for col in range(4-row):
print(col+1, end=' ')
print("* ", end= ' ')
print()
输出：
1 2 3 4 * 1 2 3 * 1 2 * 1 * *
5)
for row in range(5):
for col in range(4-row):
print(col+1, end=' ')
for col in range(5):
print("* ",end=' ')
print()
输出：
1 2 3 4 * * * * * 1 2 3 * * * * * 1 2 * * * * * 1 * * * * * * * * * *
6)
for row in range(5):
for col in range(4-row):
print(col+1, end=' ')
for col in range(5):
print(col,end=' ')
print()
输出：
1 2 3 4 0 1 2 3 4 1 2 3 0 1 2 3 4 1 2 0 1 2 3 4 1 0 1 2 3 4 0 1 2 3 4
7)
for row in range(5):
for col in range(4-row):
print(" ", end=' ')
for col in range(row+1):
print(col+1,end=' ')
print()
输出：
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
8)
for row in range(5):
for col in range(4-row):
print("", end=' ')
for col in range(row+1):
print(col+1,end=' ')
print()
输出：
1 1 2 1 2 3 1 2 3 4 1 2 3 4 5
9)
for row in range(5):
for col in range(4-row):
print(" ", end=' ')
for col in range(5):
print(col+1,end=' ')
print()
输出：
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
10)
for row in range(5):
for col in range(row+1):
print(col+1,end=' ')
print()
输出：
1 1 2 1 2 3 1 2 3 4 1 2 3 4 5
11)
for row in range(5):
for star in range(4-row):
print("*",end=' ')
for col in range(row+1):
print(col+1,end=' ')
print()
输出：
* * * * 1 * * * 1 2 * * 1 2 3 * 1 2 3 4 1 2 3 4 5
12)
for row in range(5):
for star in range(4-row):
print(" ",end=' ')
for col in range(row+1):
print(5-col,end=' ')
print()
输出：
5
5 4
5 4 3
5 4 3 2
5 4 3 2 1
13)
for row in range(5):
for space in range(4-row):
print(' ',end=' ')
for col in range(row+1):
print(5+col-row,end=' ')
print()
输出：
5
4 5
3 4 5
2 3 4 5
1 2 3 4 5
以上是Python Day- 使用循环、任务形成模式的详细内容。更多信息请关注PHP中文网其他相关文章！
