python代码练习1

PnZh0Y12026-01-22 11:31

python 复制代码

sum = 0
for i in range(1, 101):
    sum = sum + 1 / i
print("sum=%.6f" % sum)

python 复制代码

sum = 1
f = -1
for i in range(2, 101):
    sum = sum + 1 / i * f
    f = -f
print("sum=%.6f" % sum)

python 复制代码

sum = 0
t = 0
for i in range(1, 101):
    t = t + i
    sum = sum + 1 / t
print("sum=%.6f" % sum)

python 复制代码

a = 2
sum = 0
for i in range(6):
    sum = sum + a
    a = a * 10 + 2
print("sum=", sum)

python 复制代码

sum = 1
t = 1
i = 1
while 1 / t > 1e-6:
    t = t * i
    sum = sum + 1 / t
    i += 1
print("sum=%.6f" % sum)

python 复制代码

pi = 1
f = -1
i = 3
while 1 / i > 1e-6:
    pi = pi + 1 / i * f
    i = i + 2
    f = -f
print("pi=%.6f" % (pi * 4))