Python 将字符串赋给变量时无法转义转义引号
我有一个bash命令要运行,为此我将它分配给一个变量。 要运行的命令是:Python 将字符串赋给变量时无法转义转义引号,python,python-3.x,Python,Python 3.x,我有一个bash命令要运行,为此我将它分配给一个变量。 要运行的命令是: papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}' 我可以在python3中打印它,如下所示: >>> print("papermill athena-py/params_to_dict.ipynb athena-py/output_para
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
我可以在python3中打印它,如下所示:
>>> print("papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}'))
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
但是,当我为变量指定相同的值时:
a= "papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}')
我得到以下信息:
'papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y \'{"aviral":"srivastava"}\''
注意输出中的\
我希望使用变量赋值来实现所需的结果(在
print
语句中完成)。两个字符串完全相同。如果在IDE上运行这两个命令,或者通过终端使用pythonscript.py
print("papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}'))
a= "papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}')
print(a)
输出将是
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
只是Python在单引号周围添加了一个额外的反斜杠,因为字符串中也有双引号,反斜杠转义单引号以提供字符串的可打印表示
>>> print("papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}'))
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
>>> a= "papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}')
>>> print(a)
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
>>> a
'papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y \'{"aviral":"srivastava"}\''
从本质上讲,转义字符串是字符串的repr
表示形式
>>> print("papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}'))
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
>>> a= "papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}')
>>> print(a)
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
>>> a
'papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y \'{"aviral":"srivastava"}\''
从文档中:
报告(对象)返回包含对象的可打印表示形式的字符串
两个字符串完全相同。如果在IDE上运行这两个命令,或者通过终端使用
pythonscript.py
print("papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}'))
a= "papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}')
print(a)
输出将是
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
只是Python在单引号周围添加了一个额外的反斜杠,因为字符串中也有双引号,反斜杠转义单引号以提供字符串的可打印表示
>>> print("papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}'))
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
>>> a= "papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}')
>>> print(a)
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
>>> a
'papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y \'{"aviral":"srivastava"}\''
从本质上讲,转义字符串是字符串的repr
表示形式
>>> print("papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}'))
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
>>> a= "papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}')
>>> print(a)
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
>>> a
'papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y \'{"aviral":"srivastava"}\''
从文档中:
报告(对象)返回包含对象的可打印表示形式的字符串 看看这个,
>>> print("papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}'))
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
>>> a= "papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}')
在这里,您看到的是\
,因为它正在单引号中打印字符串文字
>>> a
'papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y \'{"aviral":"srivastava"}\''
如果您打印变量,它将按照您的要求正常显示
>>> print(a)
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
看看这个,
>>> print("papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}'))
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
>>> a= "papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{}'".format('{"aviral":"srivastava"}')
在这里,您看到的是\
,因为它正在单引号中打印字符串文字
>>> a
'papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y \'{"aviral":"srivastava"}\''
如果您打印变量,它将按照您的要求正常显示
>>> print(a)
papermill athena-py/params_to_dict.ipynb athena-py/output_params_to_dict.ipynb -y '{"aviral":"srivastava"}'
无法重新生成。我通过打印
a
得到了papermill雅典娜py/params_to_dict.ipynb雅典娜py/output_params_to_dict.ipynb-y'{“aviral”:“srivastava”}'
,这些转义将只在REPL上可见。您可以放心地忽略它们。无法重新生成。我通过打印a
得到了papermill雅典娜py/params_to_dict.ipynb雅典娜py/output_params_to_dict.ipynb-y'{“aviral”:“srivastava”}'
,这些转义将只在REPL上可见。你可以放心地忽略它们。那么,我可以使用变量忽略转义序列吗?@AviralSrivastava别忘了接受答案,如果它消除了你的疑虑。快乐编码!bhaijaan,在这个问题上有什么我应该即兴创作的吗?它得到了两张反对票。那么,我可以使用这个变量忽略转义序列吗?@AviralSrivastava别忘了接受答案,如果它消除了你的疑虑。快乐编码!bhaijaan,在这个问题上有什么我应该即兴创作的吗?它得到了两张反对票。