问题
The standard return value from the Google maps API looks like this - after conversion from bytes to a string:
b'{\n "destination_addresses" : [ "Washington, DC, USA" ],\n "origin_addresses" : [ "New York, NY, USA" ],\n "rows" : [\n {\n "elements" : [\n {\n "distance" : {\n "text" : "370 km",\n "value" : 369720\n },\n "duration" : {\n "text" : "3 hours 48 mins",\n "value" : 13672\n },\n "status" : "OK"\n }\n ]\n }\n ],\n "status" : "OK"\n}\n'
In order to process is any further, I would like to remove all the line break characters first. However, I don't know how to do it
results_str.replace('\n', "")
won't work, .i.e., it returns the same string without replacing the '\n's, because of the line continuation character.
Same thing happens when I double the backslash
results_str.replace('\\n', "")
Any tips?
回答1:
results_str.replace('\n', "")
You're so close. The \ is an escape character in string literals, so you must either double it up, or use a raw string:
results_str.replace('\\n', "")
results_str.replace(r'\n', "")
Also remember that Python strings are immutable: replace() returns a new string, because the existing string cannot be modified. If you want to keep the changed string, you have to assign it to some name, such as the original name:
results_str = results_str.replace(r'\n', "")
Although you may want to process your data in a fashion that doesn't care about the newlines. That looks like JSON, so rather than trying to parse it yourself you should probably be using the Python json module.
回答2:
This is a JSON response. Instead of trying to mess with the string, you should use the json module to parse the string:
import json
result = b'{\n "destination_addresses" : ...'
obj = json.loads(obj.decode('utf-8'))
来源：https://stackoverflow.com/questions/16001307/removing-continuation-characters-in-the-middle-of-a-string-in-python