10 examples of 'python format float 2 decimal' in Python

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16def format_decimal(value):
17 return Decimal(value.quantize(Decimal('.01'), rounding=ROUND_HALF_UP))
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24def float_str(f, min_digits=2, max_digits=6):
25 """
26 Returns a string representing a float, where the number of
27 significant digits is min_digits unless it takes more digits
28 to hit a non-zero digit (and the number is 0 < x < 1).
29 We stop looking for a non-zero digit after max_digits.
30 """
31 if f >= 1 or f <= 0:
32 return str(round_float(f, min_digits))
33 start_str = str(round_float(f, max_digits))
34 digits = start_str.split(".")[1]
35 non_zero_indices = []
36 for i, digit in enumerate(digits):
37 if digit != "0":
38 non_zero_indices.append(i + 1)
39 # Only saw 0s.
40 if len(non_zero_indices) == 0:
41 num_digits = min_digits
42 else:
43 # Of the non-zero digits, pick the num_digit'th of those (including any zeros)
44 min_non_zero_indices = range(non_zero_indices[0], non_zero_indices[-1] + 1)[:min_digits]
45 num_digits = min_non_zero_indices[-1]
46 return str(round_float(f, num_digits))
48def format_float(x):
49 try:
50 return "%10.5f" % x
51 except:
52 return str(x)
114def decimal2text(value, places=2,
115 int_units=(('', '', ''), 'm'),
116 exp_units=(('', '', ''), 'm')):
117 value = decimal.Decimal(value)
118 q = decimal.Decimal(10) ** -places
119
120 integral, exp = str(value.quantize(q)).split('.')
121 return u'{} {}'.format(
122 num2text(int(integral), int_units),
123 num2text(int(exp), exp_units))
5def fmtFloat(n):
6 return '{:6.3f}'.format(n)
55def representacion(float, format=0, total=0, decimales=4, exp=False, tol=5,
56 signo=False, thousand=False):
57 """Function for string representation of float values
58 float: number to transform
59 format: mode
60 0 - fixed point
61 1 - Significant figures
62 2 - Engineering format
63 total: total number of digits
64 decimales: decimal number
65 exp: boolean to use engineering repr for big or small number
66 tol: exponent limit tu use engineering repr over float normal repr
67 signo: show sign
68 thousand: use thousan separator point
69 """
70 if type(float) is str:
71 return float
72
73 if signo:
74 start = "{:+"
75 else:
76 start = "{: "
77
78 if thousand:
79 coma = ",."
80 else:
81 coma = "."
82
83 if exp and (-10**tol > float or (-10**-tol < float < 10**(-tol+1) and
84 float != 0) or float > 10**tol):
85 format = 2
86 if float == 0:
87 decimales = 1
88
89 if format == 1:
90 string = start+"{}{:d}g".format(coma, decimales)+"}"
91 elif format == 2:
92 string = start+"{:d}{}{:d}e".format(total, coma, decimales)+"}"
93 else:
94 string = start+"{:d}{}{:d}f".format(total, coma, decimales)+"}"
95
96 return string.format(float)
60def test_decimal_int(self):
61 a, b = mathfilters.handle_float_decimal_combinations(Decimal('2.0'), 1, '+')
62 self.assertTrue(isinstance(a, Decimal), 'Type is {0}'.format(type(a)))
63 self.assertTrue(isinstance(b, int), 'Type is {0}'.format(type(b)))
66def test_float(self):
67 self.assertEqual(sqlrepr(10.01), "10.01")
238def test_as_decimal():
239 amount = EUR('1.23')
240 quantized_decimal = Decimal('1.23').quantize(Decimal('.01'))
241 assert amount.as_decimal() == quantized_decimal
4def format_float_text(value):
5 v = value
6 if isinstance(v, u.Quantity):
7 v = value.value
8 elif isinstance(v, str):
9 v = float(value)
10
11 if 0.001 <= abs(v) <= 1000 or abs(v) == 0.0:
12 return "{0:.3f}".format(value)
13 else:
14 return "{0:.3e}".format(value)

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