python菱形

u=int(input("请输入行数"))
for i in range(1,u+1):
print(" ")
for j in range(i,u):
print(" ",end="")
for k in range(u-i+1,u):
print("*",end="")
for m in range(u-i,u):
print("*",end="")
for f in range(u+1,2*u+1):
print(" ")
for z in range(u+1,f):
print(" ",end="")
for p in range(f-1,2*u):
print("*",end="")
for c in range(f,2*u):
print("*",end="")

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