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Pythonの便利技と注意点:print編

Last updated at Posted at 2022-08-30

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intを格納した変数を文字列と一緒に表示する技

+記号を使うとエラーが出る
>>> num = int(input('How many do you have?'))
How many do you have?3

>>> print('You have ' + num + '.')
Traceback (most recent call last):
  File "<pyshell#46>", line 1, in <module>
    print('You have ' + num + '.')
TypeError: can only concatenate str (not "int") to str
,でつなげるとエラーは出ない。但し、各項目ごとに自動でスペースが入る
>>> print('You have', num, '.')
You have 3 .

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