Python log10()用法及代碼示例

Decimal＃log10()：log10()是一個Decimal類方法，它返回Decimal值的以10為底的對數。

用法：Decimal.log10()

參數：十進製值

返回：十進製值的十進製對數。

代碼1：log10()方法的示例

# Python Program explaining  
# log10() method 
  
# loading decimal library 
from decimal import *
  
  
# Initializing a decimal value 
a = Decimal('.9932') 
  
b = Decimal('0.142857') 
  
# printing Decimal values 
print ("Decimal value a : ", a) 
print ("Decimal value b : ", b) 
  
  
# Using Decimal.log10() method 
print ("\n\nDecimal a with log10() method : ", a.log10()) 
  
print ("Decimal b with log10() method : ", b.log10())

輸出：

Decimal value a :  0.9932
Decimal value b :  0.142857


Decimal a with log10() method :  -0.002963289117473302730973454338
Decimal b with log10() method :  -0.8450984743089558813497604715

代碼2：log10()方法的示例

# Python Program explaining  
# log10() method 
  
# loading decimal library 
from decimal import *
  
  
# Initializing a decimal value 
a = Decimal('3.14') 
  
b = Decimal('321e + 5') 
  
# printing Decimal values 
print ("Decimal value a : ", a) 
print ("Decimal value b : ", b) 
  
  
# Using Decimal.log10() method 
print ("\n\nDecimal a with log10() method : ", a.log10()) 
  
print ("Decimal b with log10() method : ", b.log10())

輸出：

Decimal value a :  3.14
Decimal value b :  3.21E+7


Decimal a with log10() method :  0.4969296480732149319752200246
Decimal b with log10() method :  7.506505032404872078129569143

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