Forked from anonymous/Visualize where Python slicing happens
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January 20, 2017 14:22
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Visualize where Python slicing happens
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def show_slicing(text, start=0, stop=None, step=1): | |
if step<1: | |
print("Sorry, reverse stepping not supported in this visualization") | |
else: | |
sliced_text = text[start:stop:step] | |
lead_space = ' '*start+'|' | |
marker = '^' + (step-1)*' ' | |
(marks, tail) = divmod(len(text)-start, step) | |
untruncated_markline = lead_space + marker*marks + 'x'*tail | |
truncated_markline = untruncated_markline[:(stop+1)]+'|' | |
print(f'\nSlicing start={start} stop={stop} step={step}') | |
print(f'|{text}|') | |
print(f'{truncated_markline}') | |
print(f'Slicing result: <{sliced_text}>') | |
show_slicing('The quick brown fox jumped over the lazy sleeping dog',1,-5,4) | |
show_slicing('The quick brown fox jumped over the lazy sleeping dog',2,13,3) | |
show_slicing('The quick brown fox jumped over the lazy sleeping dog',2,13,3) | |
show_slicing('The quick brown fox jumped over the lazy sleeping dog',2,14,3) | |
show_slicing('The quick brown fox jumped over the lazy sleeping dog',2,15,3) | |
show_slicing('The quick brown fox jumped over the lazy sleeping dog',10,13) |
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