In this last example, we will use the index() method to get the search string in the list:try: my_list.index(search_string) print(True) except ValueError: print(False) # TrueThis example attempts to find the index of search_string within my_list using the index() method. The try ...
list_numbers=[1,2,3,4,5,6,7,8,9,10]element=7list_numbers.index(element,1,5) Finding All Occurrences Since theindex()only returns the first match to an object, you can use list comprehension, or generator expression if you need the positions of more matches in the list. Here is how...
1for i in range(10)：2# 错误原因：冒号是中文标点符号 解决方法：除了字符串中可以有中文外，其它任何情况均使用英文状态进行编辑。二、 IndentationError 缩进错误 报错信息：1IndentationError：unindent does not match any outer indentation level2IndentationError：expected an indented block 错误示例：1a = 22...
(导致“IndentationError:unexpected indent”、“IndentationError:unindent does not match any outer indetation level”以及“IndentationError:expected an indented block”) 反例: 4)在 for 循环语句中忘记调用 len() (导致“TypeError: 'list' object cannot be interpreted as an integer”) 反例: 正例: 5)尝...
Index Range: The range of valid indices for a list of lengthnis from0ton-1for positive indices and-nto-1for negative indices. Attempting to access an index outside this range, such ascolors[3]orcolors[-4]in our example, results in anIndexError: listindexoutofrange. ...
File ".py", line 6 print ("False") ^ IndentationError: unindent does not match any outer indentation level 11. 条件判断语句 11.1 if 语句 条件判断是通过一条或多条判断语句的执行结果(True 或者 False)来决定执行的代码块。在 Python 语法中,使用 if、elif 和 else 三个关键字来进行条件判断,Python...
# left_index = True 索引作为key 去join left_index : boolean, default False Use the index from the left DataFrame as the join key(s). If it is a MultiIndex, the number of keys in the other DataFrame (either the index or a number of columns) must match the number of levels ...
1for iinrange(10):2# 错误原因:冒号是中文标点符号 解决方法: 除了字符串中可以有中文外,其它任何情况均使用英文状态进行编辑。 二、 IndentationError 缩进错误 报错信息: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 1IndentationError:unindent does not match any outer indentation level 2IndentationErro...
axis : {0 or ‘index’, 1 or ‘columns’}, default 0 Axis to direct sorting ascending : bool or list of bool, default True Sort ascending vs. descending. Specify list for multiple sort orders. If this is a list of bools, must match the length of the by. inplace : bool, default...
Indentati: unindent does not match any outer indentation level 说明:缩进问题。可能的原因: 同一级别的代码块使用不同的缩进规则(代码未对齐)。解决方案:调整缩进。 有非法字符或其他格式的不可见内容。解决方案:删除非法字符。 IndexError: list index out of range ...