Python log10() Function

Python Numbers

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Description

The log10() method returns the logarithm of x to base 10.

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Syntax

The following is the syntax of the log10() method:

import math

math.log10( x )

Note:log10() is not directly accessible; you need to import the math module and call this method via a static object.

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Parameters

• x -- A numeric expression.

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Return Value

Returns the logarithm of x to base 10, where x > 0.

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Example

The following example demonstrates the use of the log10() method:

#!/usr/bin/python
import math   # 导入 math 模块

print "math.log10(100.12) : ", math.log10(100.12)
print "math.log10(100.72) : ", math.log10(100.72)
print "math.log10(119L) : ", math.log10(119L)
print "math.log10(math.pi) : ", math.log10(math.pi)

After running the above example, the output result is:

math.log10(100.12) :  2.00052084094
math.log10(100.72) :  2.0031157171
math.log10(119L) :  2.07554696139
math.log10(math.pi) :  0.497149872694

Python Numbers

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