49 lines
1.2 KiB
Python
49 lines
1.2 KiB
Python
import dis
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let template = '''
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class Foo:
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def method(__args__):
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pass
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'''
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# 'self' can only be the first argument
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try:
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dis.build(template.replace('__args__','a,self'))
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print('fail')
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except SyntaxError as e:
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print('pass' if 'implicit' in str(e) else 'fail')
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# 'self' can not be a star arg
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try:
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dis.build(template.replace('__args__','a,*self'))
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print('fail')
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except SyntaxError as e:
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print('pass' if 'implicit' in str(e) else 'fail')
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# 'self' can not be a star-star arg
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try:
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dis.build(template.replace('__args__','a,**self'))
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print('fail')
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except SyntaxError as e:
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print('pass' if 'implicit' in str(e) else 'fail')
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# 'self' can not take a default value
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try:
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dis.build(template.replace('__args__','self=42'))
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print('fail')
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except SyntaxError as e:
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print('pass' if 'keyword argument' in str(e) else 'fail')
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# for that matter, neither can star args
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try:
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dis.build(template.replace('__args__','*args=[]'))
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print('fail')
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except SyntaxError as e:
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print('pass' if 'end of' in str(e) else 'fail')
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try:
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dis.build(template.replace('__args__','**args=[]'))
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print('fail')
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except SyntaxError as e:
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print('pass' if 'end of' in str(e) else 'fail')
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