【Python】'Too large to show contents. Max items to show: 300'

使用Python操作MySQL，需要批量获取上万条数据，并把结果返回写入文件；

遇到问题：'Too large to show contents. Max items to show: 300'

解决办法如下：

在pycharm中debug时，如果len(list)>300，会提示too long to print，无法查看list[300]以后的参数，此时修改pycharm的配置文件即可，方法如下：

进入到pycharm安装目录下并编辑下述文件

>helpers/pydev/_pydevd_bundle/pydevd_resolver.py

修改MAX_ITEMS_TO_HANDLE为你需要的值即可

不建议改的太大，不然会很卡

 

 

 

这个文件路径一般在这里：C:\Program Files\BEN\JetBrains\PyCharm 2018.3.4\helpers\pydev\_pydevd_bundle

详见：pydevd_resolver.py

参见如下：

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try:     import StringIO except:     import io as StringIO import traceback from os.path import basename   from _pydevd_bundle import pydevd_constants from _pydevd_bundle.pydevd_constants import dict_iter_items, dict_keys, xrange     # Note: 300 is already a lot to see in the outline (after that the user should really use the shell to get things) # and this also means we'll pass less information to the client side (which makes debugging faster). MAX_ITEMS_TO_HANDLE = 300   TOO_LARGE_MSG = 'Too large to show contents. Max items to show: ' + str(MAX_ITEMS_TO_HANDLE) TOO_LARGE_ATTR = 'Unable to handle:'

 

改文件第14行修改即可。

如果在C盘，需要以管理员模式编辑。

 

 

 

 

待续...