You can simply use str method to convert float to String. Let’s understand with the help of simple example. 1 2 3 4 f=1.23444432 print("Converted f to String:",str(f)) Output: Converted f to String: 1.23444432 Let’s say you want to format String to only two decimal places. You ...
@EVERYBODY: You don't need to convert a float to a decimal to preserve the precision. The whole point of the repr() function is that the following is guaranteed: float(repr(a_float)) == a_float Python 2.X (X <= 6) repr gives a constant 17 decimal digits of precision, as that ...
from decimalimportDecimal # 精确表示0.1decimal_value=Decimal('0.1')print(decimal_value+decimal_value+decimal_value==Decimal('0.3'))# 输出True 如上例所示,Decimal类型能够精确处理我们希望为精确的十进制数。 float和Decimal的性能考量 尽管Decimal能提供更高的精度,但这也意味着牺牲了性能。由于float是使用硬...
You can also create a literal using the dot without specifying the decimal part, which defaults to 0. Finally, you make a literal without specifying the integer part, which also defaults to 0.You can also have negative float numbers:
浮点型(float) 布尔型(bool) 复数性(complex) 字符型(string):表示数据组成是字符 列表(list):用来表示一组有序元素,后期数据可以修改 ['A','B','C'] 元组(tuple):用来表示一组有序元素,后期数据不可修改 ('A','B','C','1') 集合(set):一组数据无序不重复元素 set([1,2,3,4]) 字典(dictio...
ValueError: could not convert string to float: '22.22a' 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. float类型的取整问题 包括:向下取整、向上取整、四舍五入,分别取整数部分和小数部分 # 向下取整 >>> int(22.22) 22 # 向上取整 ...
python中可以通过输出格式串的设置，实现浮点数输出时的小数位数控制。（1）%格式串，可以用%m.nf来控制...
String form:[1,2,3]Length:3Docstring:Built-inmutable sequence.If no argument is given,the constructor creates anewemptylist.The argument must be an iterableifspecified.In[3]:print?Docstring:print(value,...,sep=' ',end='\n',file=sys.stdout,flush=False)Prints the values to a stream,or ...
>>> from array import array >>> signed = array("b", [-42, 42]) >>> unsigned = array("B") >>> unsigned.frombytes(signed.tobytes()) >>> unsigned array('B', [214, 42]) >>> bin(unsigned[0]) '0b11010110' >>> bin(unsigned[1]) '0b101010' ...
# Method 1: Convert string to float using float() string_to_float = float("123.45") # Method 2: Convert string to float # Using the decimal module import decimal string_with_comma = "1,234.567" decimal_float = decimal.Decimal(string_with_comma.replace(',','')) ...