如何在Python中从字符串中删除撇号

Question

I'd like to remove all the '' from each symbol using Python.

'MMM', 'AXP', 'AAPL', 'BA', 'CAT', 'CVX', 'CSCO', 'KO', 'DD', 'XOM', 'GE', 'GS', 'HD', 'IBM', 'INTC', 'JNJ', 'JPM', 'MCD', 'MRK', 'MSFT', 'NKE', 'PFE', 'PG', 'TRV', 'UNH', 'UTX', 'VZ', 'V', 'WMT', 'DIS'

so I end up with: MMM, AXP, AAPL, BA, and so on...

I tried

str = 
'MMM’, ‘AXP’, ‘AAPL’, ‘BA’, ‘CAT’, ‘CVX’, ‘CSCO’, ‘KO’, ‘DD’, ‘XOM’, ‘GE’, ‘GS’, ‘HD’, ‘IBM’, ‘INTC’, ‘JNJ’, ‘JPM’, ‘MCD’, ‘MRK’, ‘MSFT’, ‘NKE’, ‘PFE’, ‘PG’, ‘TRV’, ‘UNH’, ‘UTX’, ‘VZ’, ‘V’, ‘WMT’, ‘DIS’

and then:

str2 = str.replace("''","")

but to no avail. any ideas?

Answer 1

str.replace("‘", '').replace("’", '').replace("'", '')

（用双引号括起所有可能的引言）。

Answer 2

You are trying to replace '' which is not present in your string, just replace ' .

In [8]: a = "'a'"

In [9]: a
Out[9]: "'a'"

In [10]: a.replace("'", "") # This works
Out[10]: 'a'

In [11]: a.replace("''", "") # Your attempt
Out[11]: "'a'"

Answer 3

You're asking it to replace double-apostrophes with the code str.replace("''","") , but the apostrophes in your string are all individual. You should try just with a single like str.replace("'","")

Also you might be running into a problem where they are not apostrophes, but single quotation marks, in which case you might need something like:

str = str.replace("'", "")`
str = str.replace(u"\u2018", "")` # LEFT SINGLE QUOTATION MARK (U+2018)
str = str.replace(u"\u2019", "")` # RIGHT SINGLE QUOTATION MARK (U+2019)