python fraction to decimal

In Python, different hexadecimal conversion (binary, octal, decimal, and hexadecimal) and python hexadecimal In my opinion, hexadecimal conversion is indeed a common problem. Therefore, in Python, the following code is also indispensable. This is an article from the Internet that can also be converted to

I ran into a problem today when I wrote the program. about how to control floating-point numbers only two digits after the decimal point, the normal idea is to use the round function, such as round (A, 2), but in the face of the following problems round is not very useful >>> a=13.949999999999999>>> Round (A, 2)13.949999999999999 On the Internet to check the information, a Netizen provides a method >>> print "%.2f"% a 13.95 You can also use the

#-*-Coding:utf-8-*-__author__ = ' Administrator '#数学计算Import decimal# for fixed-point and floating-point arithmetic#文档: Https://docs.python.org/2.7/library/decimal.html?highlight=decimal#module-decimal#使用from_float () can accurately convert decimalsFmt= ' {0:Print Fmt.format (' INPUT ', ' output ')Print Fmt.format ('-' *25, '-' *25)Print Fmt.format (5,

Random.uniform (); Generates a random floating-point number within a specified range Random.randint (A,B): Generates an integer between a Random.randrange (a,b,step): Generate a random number Random.choice (Sequence): Gets a random element from the sequence, a list tuple string Random.shuffle (list): Scrambling lists Random.sample (sequence,k): Randomly get fragments of a specified length of k from a sequence. 3.decimal Module GetContext (). Prec,

, Emin=-999999, Emax=999999, capitals=1, clamp=0, flags=[], traps=[InvalidOperation, DivisionByZero, Overflow])>>> getcontext().prec=50>>> b=Decimal(1)/Decimal(3)>>> bDecimal(‘0.33333333333333333333333333333333333333333333333333‘)>>> c=Decimal(1)/Decimal(17)>>> cDecimal(‘0.0588235294117647058823529411764705882352941176

Python retains two decimal places:In [1]: a = 5.026In [2]: b = 5.000In [3]: Round (a,2) out[3]: 5.03In [4]: Round (b,2) out[4]: 5.0In [5]:'%.2f'%aout[5]:'5.03'In [6]:'%.2f'%bout[6]:'5.00'In [7]: Float ('%.2f'%a) out[7]: 5.03In [8]: Float ('%.2f'%b) out[8]: 5.0In [9]: fromDecimalImportDecimalin [Ten]: Decimal ('5.026'). Quantize (

Performing Division for the number of plastic-C + + languages will be performed on the floor except for the number of parts. such as int a=15/10; The result of a is 1. The same is true in Java, so the two int data division needs to force type conversions when it comes to returning a floating-point data, such as float a = (float) b/c, where B and c are int data. Python is divided into 3 divisions: traditional division, precise division, and floor remov

Bitwise computation is the foundation of computer learning. Python fully supports bitwise operators to display the result of bitwise computation almost directly, here we will briefly summarize the Basic decimal bitwise calculation summary and computation examples in Python. And Operations Example:3 5Solution: The binary complement code of 3 is 11, the complem

Link Source: 58603865 *************************************************************************************************************** **************** Key points: 1, then python in the bottom of the byte are encoded, Python2 is the Assic code, Python3 is Unicode, are bytes, not binary, encoding and binary conversion between the bottom of the python implementation of the function

This article mainly introduces Python to determine whether it is a positive decimal and positive integer instances of the relevant data, here provides examples, examples of annotations are clear, the need for friends can refer to the following Python determines whether an instance of a positive decimal and a positive

Conversion of various basic types in python, binary, octal, decimal, and hexadecimal All types in python exist as objects. In python, there is no char type and only a string type. This may be inconvenient to convert the char type to an integer type, but python already prov

#!/usr/bin/env python#-*-coding:utf-8-*-# 2/10/16 base Trans wrote by Srcdog on 20th, April, 2009# ld elements in BAS E 2, 16.import os,sys# global definition# base = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, f]base = [STR (x) for X In range (+)] + [Chr (x) for X in range (Ord (' A '), Ord (' a ') +6)]# bin2dec# binary to decimal: Int (str,n=10) def bin2dec (String_num): return str (int (string_num,

In my impression, it is a common problem to convert into one another, so in Python, the following code should be accepted as util. This is a search from the Internet also can also be a Python binary conversion, verified can be used. The implementation code is posted below: #!/usr/bin/env python #-*-coding:utf-8-*-# 2/10/16 base Trans. wrote by Srcdog on 20th, Ap

This article mainly introduced Python through the floor function discard the decimal place method, the example analyzes the Python floor function function and the use skill, needs the friend to be possible to refer to under This example describes how Python discards decimal