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

使用Python操作MySQL，需要批量獲取上萬條數據，並把結果返回寫入文件；

遇到問題：'Too large to show contents. Max items to show: 300'

解決辦法如下：

在pycharm中debug時，如果len(list)>300，會提示too long to print，無法查看list[300]以后的參數，此時修改pycharm的配置文件即可，方法如下：

進入到pycharm安裝目錄下並編輯下述文件

>helpers/pydev/_pydevd_bundle/pydevd_resolver.py

修改MAX_ITEMS_TO_HANDLE為你需要的值即可

不建議改的太大，不然會很卡

 

 

 

這個文件路徑一般在這里：C:\Program Files\BEN\JetBrains\PyCharm 2018.3.4\helpers\pydev\_pydevd_bundle

詳見：pydevd_resolver.py

參見如下：

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盤，需要以管理員模式編輯。

 

 

 

 

待續...