pyth习题
模式A:
for n in range(1,7):for i in range(1,n+1):print(i,end=" ")print()

模式B:
for n in range(7, 0, -1):for i in range(1, n):print(i, end=" ")print()

模式C:
for n in range(1, 7):for i in range(6 - n, 0, -1):print(" ", end=" ")for i in range(n, 0, -1):print(i, end=" ")print()

模式D:
for n in range(1, 7):for i in range(1, n):print(" ", end=" ")for i in range(1, 8 - n):print(i, end=" ")print()


for n in range(0, 8):for i in range(8 - n, 1, -1):print(" ", end=" ")for i in range(n + 1):if 2 ** i >= 10 and 2 ** i < 100:print(2 ** i, end=" ")elif 2 ** i >= 100:print(2 ** i, end=" ")else:print(2 ** i, end=" ")for i in range(n - 1, -1, -1):if 2 ** i >= 10 and 2 ** i < 100:print(2 ** i, end=" ")elif 2 ** i >= 100:print(2 ** i, end=" ")else:print(2 ** i, end=" ")print()

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