micropython/tests/float/string_format.py

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def test(fmt, *args):
print("{:8s}".format(fmt) + ">" + fmt.format(*args) + "<")
test("{:10.4}", 123.456)
test("{:10.4e}", 123.456)
test("{:10.4e}", -123.456)
test("{:10.4f}", 123.456)
test("{:10.4f}", -123.456)
test("{:10.4g}", 123.456)
test("{:10.4g}", -123.456)
test("{:10.4n}", 123.456)
test("{:e}", 100)
test("{:f}", 200)
test("{:g}", 300)
test("{:10.4E}", 123.456)
test("{:10.4E}", -123.456)
test("{:10.4F}", 123.456)
test("{:10.4F}", -123.456)
test("{:10.4G}", 123.456)
test("{:10.4G}", -123.456)
test("{:06e}", float("inf"))
test("{:06e}", float("-inf"))
test("{:06e}", float("nan"))
test("{:f}", False)
test("{:f}", True)
# The following fails right now
# test("{:10.1}", 0.0)
print("%.0f" % (1.750000 % 0.08333333333))
# Below isn't compatible with single-precision float
# print("%.1f" % (1.750000 % 0.08333333333))
# print("%.2f" % (1.750000 % 0.08333333333))
# print("%.12f" % (1.750000 % 0.08333333333))
# tests for errors in format string
try:
"{:10.1b}".format(0.0)
except ValueError:
print("ValueError")