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Decimal＃sqrt()：sqrt()是一个Decimal类方法，该方法将非负数的平方根返回上下文精度。

用法：Decimal.sqrt()

参数：十进制值

返回：非负数的平方根到上下文精度。

代码1：sqrt()方法示例

# Python Program explaining

# sqrt() method

# loading decimal library

from decimal import *

# Initializing a decimal value

a = Decimal(1)

b = Decimal(2)

# printing Decimal values

print ("Decimal value a : ", a)

print ("Decimal value b : ", b)

# Using Decimal.sqrt() method

print ("\n\nDecimal a with sqrt() method : ", a.sqrt())

print ("Decimal b with sqrt() method : ", b.sqrt())

输出：

Decimal value a : 1

Decimal value b : 2

Decimal a with sqrt() method : 1

Decimal b with sqrt() method : 1.414213562373095048801688724

代码2：sqrt()方法的示例

# Python Program explaining

# sqrt() method

# loading decimal library

from decimal import *

# Initializing a decimal value

a = Decimal(300)

b = Decimal(15)

# printing Decimal values

print ("Decimal value a : ", a)

print ("Decimal value b : ", b)

# Using Decimal.sqrt() method

print ("\n\nDecimal a with sqrt() method : ", a.sqrt())

print ("Decimal b with sqrt() method : ", b.sqrt())

输出：

Decimal value a : 300

Decimal value b : 15

Decimal a with sqrt() method : 17.32050807568877293527446342

Decimal b with sqrt() method : 3.872983346207416885179265400