Question

我正在尝试通过python（psycopg2）在postgres中进行插入。我需要在执行插入的字符串中包含单引号和双引号。这是我的代码：

table_name = "my_table"
values_to_insert = ["""O'neal""", '''"The Film "''']
column_name_list = ["UpperAndLowercase", "otherColumn"]

"INSERT INTO {} ".format(table_name) + ", ".join(['''"{}"'''.format(i) for i in 
column_name_list]) + " VALUES(" + ", ".join("""'''{}'''"""
.format(i).encode("utf-8").decode('unicode_escape') for i in values_to_insert)

我希望如此：

'INSERT INTO my_table "UpperAndLowercase", "otherColumn" VALUES('''O'neal''', '''"The Film "''''

但是得到这个：

'INSERT INTO my_table "UpperAndLowercase", "otherColumn" VALUES(\'\'\'O\'neal\'\'\', \'\'\'"The Film "\'\'\''

Answer 1

您是否正在使用python解释器？请注意下面x与x（x）的外观。

如果我将您的代码放在脚本中并打印出来，对我来说看起来不错。

>>> table_name = "my_table"
>>> values_to_insert = ["""O'neal""", '''"The Film "''']
>>> column_name_list = ["UpperAndLowercase", "otherColumn"]
>>> 
>>> x = "INSERT INTO {} ".format(table_name) + ", ".join(['''"{}"'''.format(i) for i in
... column_name_list]) + " VALUES(" + ", ".join("""'''{}'''"""
... .format(i).encode("utf-8").decode('unicode_escape') for i in values_to_insert)
>>> x
'INSERT INTO my_table "UpperAndLowercase", "otherColumn" VALUES(\'\'\'O\'neal\'\'\', \'\'\'"The Film "\'\'\''
>>> print(x)
INSERT INTO my_table "UpperAndLowercase", "otherColumn" VALUES('''O'neal''', '''"The Film "'''
>>>

请注意，您可以只使用三元组"""而不是'''

s = """ this has 'single' and "double" quotes """

Answer 2

您可以大大简化代码：

table_name = "my_table"
values_to_insert = ["O'neal", '"The Film "']
column_name_list = ["UpperAndLowercase", "otherColumn"]

print "INSERT INTO {} ".format(table_name) + ", ".join(['"{}"'.format(i) for i in column_name_list]) + " VALUES(" + ", ".join(["'''{}'''".format(i) for i in values_to_insert])

输出您想要的结果：

INSERT INTO my_table "UpperAndLowercase", "otherColumn" VALUES('''O'neal''', '''"The Film "'''

在python字符串变量中同时包含单引号和双引号

2 个答案: