print(f"The integer is: {num}") 2、打印浮点数 num = 123.456 print(f"The floating point number is: {num:.2f}") 3、控制小数点位数 在打印浮点数时,你可以控制小数点后的位数。 num = 123.456789 print(f"The number with 3 decimal places is: {
int "integer" float "floating point" } NUMERIC { decimal_places "number of decimal places" } 结尾 通过以上步骤和代码,我们可以轻松地读取Excel数据,并根据需要调整数据的小数位数。希望这篇文章能帮助你解决遇到的问题。如果你有任何疑问或需要进一步的帮助,请随时联系我。祝你在Python编程的道路上越走越远!
代码示例如下所示: importdecimaldefcalculate_pi(digits):decimal.getcontext().prec=digits+2pi=decimal.Decimal(0)decimal.getcontext().prec=digits+10forkinrange(digits+10):pi+=(decimal.Decimal(-1)**k)/(decimal.Decimal(2*k+1))returnstr(pi*4)digits=100pi_value=calculate_pi(digits)print(f"Th...
x = Decimal('0.1') + Decimal('0.1') + Decimal('0.1') print(x == Decimal('0.3')) print(float(x) == 0.3) print(x) The example performs a comparison of floating point values with the built-infloatand theDecimaltypes. $ ./comparing.py False 0.30000000000000004 --- True True 0.3 Due...
The IEEE maintains a standard called IEEE 754 for dealing with floating-point numbers on a computer. It was published in 1985 and is still commonly used by hardware manufacturers.You can round a number to a given number of decimal places by passing a second argument to round():Python...
tracking of significant decimal places, or applications where the user expects the results to match calculations done by hand.For example, calculating a 5% tax on a 70 cent phone charge gives different results in decimal floating point and binary floating point. The difference becomes significant ...
print(1+2.0)# prints 3.0 Run Code Here, we can see above that1(integer) is converted into1.0(float) for addition and the result is also a floating point number. Explicit Type Conversion We can also use built-in functions likeint(),float()andcomplex()to convert between types explicitly....
because when the decimal string 2.675 is converted to a binary floating-point number, it’s aga...
because when the decimal string 2.675 is converted to a binary floating-point number, it’s aga...
The cmath module redefines all floating-point constants from math so that they’re at your fingertips without the need to import both modules:Python >>> import math, cmath >>> for name in "e", "pi", "tau", "nan", "inf": ... print(name, getattr(math, name) == getattr(c...