from sympy import *
x = symbols("x")
f = log(x)
str = integrate(f, x) # 不定积分
print(str)
res = integrate(f, (x, 1, exp(1))) # 定积分，上下限
print(res)
from sympy import *
x = symbols("x")
f = log(x)
str = integrate(f, x) # 不定积分
print(str)
res = integrate(f, (x, 1, exp(1))) # 定积分，上下限
print(res)
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