level 7
x = [x for x in range(1,1000000,2)]
i = 0 # x的索引
pi = 0 # 保存pi的近似值
while i < len(x):
if i % 2 == 0:
pi+=x[i]**(-1)
else:
pi-=x[i]**(-1)
i+=1
print("++++++++++++++++++++++")
Pi = 4*pi
print(Pi)
2019年04月03日 14点04分
level 7
pi = 0
i = 1 #控制分母
j = 1 #控制符号
while True:
缩进temp = 1 / i * j
缩进if abs(temp) < pow(10,-6):break
缩进pi += temp
缩进i += 2
缩进j *= -1
pi *= 4
print('pi =',pi)
2019年04月03日 15点04分
4
i = 1 #控制分母
j = 1 #控制符号
while True:
缩进temp = 1 / i * j
缩进if abs(temp) < pow(10,-6):break
缩进pi += temp
缩进i += 2
缩进j *= -1
pi *= 4
print('pi =',pi)
level 5
level 1
level 1
import time
def jishuan_pai(jingdu=0.000001,dayin_xiangxi_neirong=True,shiji_dyin=True):
print('值正在计算，时间可能较长，请耐心等待')
t1=time.time()
a=1
pai_1_4=0
fuhao=-1
cishu=1
while a >= jingdu:
zf = fuhao ** (cishu + 1)
if dayin_xiangxi_neirong==True:
print(zf,2*cishu-1,a,pai_1_4)
a=1/(2*cishu-1)
pai_1_4+=zf*a
cishu += 1
print(4*pai_1_4)
t2=time.time()
if shiji_dyin==True:
print('总共耗时: {} 秒'.format(t2-t1))
for i in [0.00001,0.000001,0.0000001,0.00000001]:
print('精度值为：',i)
jishuan_pai(i,False,True)
# i为精度，第二个为是否打印具体信息（要则填写 True），
# 第三个为是否打印计算耗时(要则填写 True)
print('*'*40)
2020年12月16日 08点12分
7
def jishuan_pai(jingdu=0.000001,dayin_xiangxi_neirong=True,shiji_dyin=True):
print('值正在计算，时间可能较长，请耐心等待')
t1=time.time()
a=1
pai_1_4=0
fuhao=-1
cishu=1
while a >= jingdu:
zf = fuhao ** (cishu + 1)
if dayin_xiangxi_neirong==True:
print(zf,2*cishu-1,a,pai_1_4)
a=1/(2*cishu-1)
pai_1_4+=zf*a
cishu += 1
print(4*pai_1_4)
t2=time.time()
if shiji_dyin==True:
print('总共耗时: {} 秒'.format(t2-t1))
for i in [0.00001,0.000001,0.0000001,0.00000001]:
print('精度值为：',i)
jishuan_pai(i,False,True)
# i为精度，第二个为是否打印具体信息（要则填写 True），
# 第三个为是否打印计算耗时(要则填写 True)
print('*'*40)
level 1
store = 1
flag = -1
for n in range(1, 10 ** 10):
n = 2 * n + 1
m = 1 / n * flag
flag *= -1
if abs(m) > 10 ** -6:
store += m
else:
print("π值≈", store)
break
2021年11月17日 12点11分
9
flag = -1
for n in range(1, 10 ** 10):
n = 2 * n + 1
m = 1 / n * flag
flag *= -1
if abs(m) > 10 ** -6:
store += m
else:
print("π值≈", store)
break
