# 6 examples of 'python f strings format float' in Python

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48def format_float(x):49    try:50        return "%10.5f" % x51    except:52        return str(x)
24def float_str(f, min_digits=2, max_digits=6):25    """26    Returns a string representing a float, where the number of27    significant digits is min_digits unless it takes more digits28    to hit a non-zero digit (and the number is 0 &lt; x &lt; 1).29    We stop looking for a non-zero digit after max_digits.30    """31    if f &gt;= 1 or f &lt;= 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_digits42    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))
5def fmtFloat(n):6    return '{:6.3f}'.format(n)
19def latex_float(f):20    float_str = "{0:.3g}".format(f)21    if "e" in float_str:22        base, exponent = float_str.split("e")23        return r"{0} \times 10^{{{1}}}".format(base, int(exponent))24    else:25        return float_str
54@jit55def float_format(x):56    """57    Format an integer:5859        - upcast to a double60        - use snprintf61        - resize buffer according to # of bytes written62    """63    return formatting.format_static("%f", upcast(x), 20)
4def format_float_text(value):5    v = value6    if isinstance(v, u.Quantity):7        v = value.value8    elif isinstance(v, str):9        v = float(value)1011    if 0.001 &lt;= abs(v) &lt;= 1000 or abs(v) == 0.0:12        return "{0:.3f}".format(value)13    else:14        return "{0:.3e}".format(value)