Python json.loads的控制字符无效

Question

下面是用下面的代码打印出来的字符串-

jsonString = data.decode("utf-8")

print jsonString

下面是控制台上打印出来的字符串-

{"description":"Script to check testtbeat of TEST 1 server.", "script":"#!/bin/bash\nset -e\n\nCOUNT=60   #number of 10 second timeouts in 10 minutes\nSUM_SYNCS=0\nSUM_SYNCS_BEHIND=0\nHOSTNAME=$hostname      \n\nwhile [[ $COUNT -ge \"0\" ]]; do\n\necho $HOSTNAME\n\n#send the request, put response in variable\nDATA=$(wget -O - -q -t 1 http://$HOSTNAME:8080/heartbeat)\n\n#grep $DATA for syncs and syncs_behind\nSYNCS=$(echo $DATA | grep -oE 'num_syncs: [0-9]+' | awk '{print $2}')\nSYNCS_BEHIND=$(echo $DATA | grep -oE 'num_syncs_behind: [0-9]+' | awk '{print $2}')\n\necho $SYNCS\necho $SYNCS_BEHIND\n\n#verify conditionals\nif [[ $SYNCS -gt \"8\" && $SYNCS_BEHIND -eq \"0\" ]]; then exit 0; fi\n\n#decrement the counter\nlet COUNT-=1\n\n#wait another 10 seconds\nsleep 10\n\ndone\n"}

但是当我使用python json.loads加载它时，如下所示-

jStr = json.loads(jsonString)

我得到这个错误-

ERROR Invalid control character at: line 1 column 202 (char 202)

我看了char 202，但我不知道为什么会有问题？我的记事本中的char 202是e我猜。。或者是我计算错了

知道怎么了吗？我如何找出是哪一个引起了问题。

更新：-

jsonString = {"description":"Script to check testtbeat of TIER 1 server.", "script":"#!/bin/bash\nset -e\n\nCOUNT=60   #number of 10 second timeouts in 10 minutes\nSUM_SYNCS=0\nSUM_SYNCS_BEHIND=0\nHOSTNAME=$hostname      \n\nwhile [[ $COUNT -ge \"0\" ]]; do\n\necho $HOSTNAME\n\n#send the request, put response in variable\nDATA=$(wget -O - -q -t 1 http://$HOSTNAME:8080/heartbeat)\n\n#grep $DATA for syncs and syncs_behind\nSYNCS=$(echo $DATA | grep -oE 'num_syncs: [0-9]+' | awk '{print $2}')\nSYNCS_BEHIND=$(echo $DATA | grep -oE 'num_syncs_behind: [0-9]+' | awk '{print $2}')\n\necho $SYNCS\necho $SYNCS_BEHIND\n\n#verify conditionals\nif [[ $SYNCS -gt \"8\" && $SYNCS_BEHIND -eq \"0\" ]]; then exit 0; fi\n\n#decrement the counter\nlet COUNT-=1\n\n#wait another 10 seconds\nsleep 10\n\ndone\n"}

print jsonString[202]

下面是我得到的错误-

KeyError: 202

Answer 1

There is no error in your json text.

如果将字符串作为字符串文字复制粘贴到Python源代码中，则可能会出现错误。在这种情况下，\n被解释为单个字符（换行符）。您可以通过使用原始字符串文本来修复它（r''，使用三引号r'''..'''以避免在字符串文本中转义"'引号）。

Answer 2

字符串中允许使用控制字符，如下所示

json_str = json.loads(jsonString, strict=False)

你可以在docs for python 2，或者the docs for python 3中找到这个

If strict is false (True is the default), then control characters will be allowed inside strings. Control characters in this context are those with character codes in the 0–31 range, including '\t' (tab), '\n', '\r' and '\0'.

Answer 3

Escape your newlines.

{"description":"Script to check testtbeat of TEST 1 server.", "script":"#!/bin/bash\\nset -e\\n\\nCOUNT=60   #number of 10 second timeouts in 10 minutes\\nSUM_SYNCS=0\\nSUM_SYNCS_BEHIND=0\\nHOSTNAME=$hostname      #dc1dbx1145.dc1.host.com\\n\\nwhile [[ $COUNT -ge \\"0\\" ]]; do\\n\\necho $HOSTNAME\\n\\n#send the request, put response in variable\\nDATA=$(wget -O - -q -t 1 http://$HOSTNAME:8080/heartbeat)\\n\\n#grep $DATA for syncs and syncs_behind\\nSYNCS=$(echo $DATA | grep -oE 'num_syncs: [0-9]+' | awk '{print $2}')\\nSYNCS_BEHIND=$(echo $DATA | grep -oE 'num_syncs_behind: [0-9]+' | awk '{print $2}')\\n\\necho $SYNCS\\necho $SYNCS_BEHIND\\n\\n#verify conditionals\\nif [[ $SYNCS -gt \\"8\\" && $SYNCS_BEHIND -eq \\"0\\" ]]; then exit 0; fi\\n\\n#decrement the counter\\nlet COUNT-=1\\n\\n#wait another 10 seconds\\nsleep 10\\n\\ndone\\n"}

对我有用。

另外，如果以后遇到这样的错误，可以使用一种调试技术，将字符串缩短为可以工作的字符串，然后缓慢地添加数据，直到它不工作为止