52 lines
1.1 KiB
Python
52 lines
1.1 KiB
Python
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def f():
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return 4
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def g(_):
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return 5
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def h():
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return 6
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print(f'no interpolation')
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print(f"no interpolation")
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print(f"""no interpolation""")
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x, y = 1, 2
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print(f'{x}')
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print(f'{x:08x}')
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print(f'a {x} b {y} c')
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print(f'a {x:08x} b {y} c')
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print(f'a {"hello"} b')
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print(f'a {f() + g("foo") + h()} b')
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def foo(a, b):
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return f'{x}{y}{a}{b}'
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print(foo(7, 8))
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# PEP-0498 specifies that '\\' and '#' must be disallowed explicitly, whereas
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# MicroPython relies on the syntax error as a result of the substitution.
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print(f"\\")
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print(f'#')
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try:
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eval("f'{\}'")
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except SyntaxError:
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print('SyntaxError')
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try:
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eval("f'{#}'")
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except SyntaxError:
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print('SyntaxError')
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# PEP-0498 specifies that handling of double braces '{{' or '}}' should
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# behave like str.format.
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print(f'{{}}')
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print(f'{{{4*10}}}', '{40}')
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# A single closing brace, unlike str.format should raise a syntax error.
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# MicroPython instead raises ValueError at runtime from the substitution.
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try:
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eval("f'{{}'")
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except (ValueError, SyntaxError):
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# MicroPython incorrectly raises ValueError here.
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print('SyntaxError')
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