52 lines
1.2 KiB
Python
52 lines
1.2 KiB
Python
import copy
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class Text:
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def __init__(self):
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self.lines = ""
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self.font = ""
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def write(self, lines):
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self.lines += lines
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def set_font(self, font_name):
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self.font = font_name
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def show(self):
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return "[{}]{}[{}]".format(self.font, self.lines, self.font) if self.font != "" else self.lines
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def restore(self, version):
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self.font = version.font
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self.lines = version.lines
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class SavedText:
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def __init__(self):
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self.texts = []
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def save_text(self, texts):
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self.texts.append(copy.deepcopy(texts))
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def get_version(self, version):
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return self.texts[version]
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if __name__ == '__main__':
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# These "asserts" using only for self-checking and not necessary for auto-testing
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text = Text()
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saver = SavedText()
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text.write("At the very beginning ")
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saver.save_text(text)
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text.set_font("Arial")
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saver.save_text(text)
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text.write("there was nothing.")
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assert text.show() == "[Arial]At the very beginning there was nothing.[Arial]"
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text.restore(saver.get_version(0))
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assert text.show() == "At the very beginning "
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print("Coding complete? Let's try tests!")
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