作业

name = " aleX"
x = "oldboy"
print(name.strip())
print(name.startswith("al"))
print(name.endswith("X"))
print(name.replace("l", "p"))
print(name.split("l"))
print(name.upper())
print(name.lower())
print(name[1])
print(name[2])
print(name[-2:])
print(name.find("e"))
print(x[:-1])

for i in range(1, 10):
for j in range(1, i + 1):
print("%s*%s=%s" % (j, i, i * j), end=" ")
print()

number = 8
for level in range(1,number):
for i in range(number-level):
print(" ",end="")
for j in range(2level-1):
print("",end="")
print()