# 实现"pythondrop某行"的步骤
## 流程图
```mermaid
graph LR
A[开始] --> B[读取文件路径]
B --> C[读取文件内容]
C --> D[删除指定行]
D --> E[保存文件]
E --> F[结束]
```
## 甘特图
```mermaid
gantt
dateFormat YYYY-MM-DD
title 实现"pythondrop某
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2024-01-24 06:12:54
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考虑，我们有这样的一个工作表：a = [[1,2,3,4,5],[4,2,6,8,0],[3,9,6,0,2],[2,8,5,7,6]]
col = ['a','b','c','d','e']
df_data = pd.DataFrame(a,columns=col)
print('df_data:\n', df_data, '\n') 我们现在想要删除‘b’列和‘d’列，代码和注释如下：#在数
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2023-06-02 11:13:32
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# 学会使用 Python 的 `drop` 关键字实现字段删除
在数据处理和分析的过程中，经常会遇到需要删除某些字段（列）的情况。Python 中常用的 Pandas 库便是处理这一需求的强大工具。本文将指导你如何使用 `drop` 函数来删除 DataFrame 中的字段（列），并提供详细的步骤和代码示例。
## 整体流程
处理字段删除的流程大致如下表所示：
| 步骤 | 描述
关于drop函数的用法DataFrame.drop(self，labels = None，axis = 0，index = None，columns = None，level = None，inplace = False，errors ='raise' )通过指定标签名称和轴，或者直接指定索引或列名称来直接删除行或列。常用参数含义：labels : 标签表示索引或列axis : 指定轴，axis
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2023-06-23 10:03:45
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第一题Python代码：# Definition for singly-linked list.
class ListNode(object):
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2022-08-23 20:22:04
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函数 ： DataFrame.drop_duplicates(subset=None, keep='first', inplace=False) 参数：这个drop_duplicate方法是对DataFrame格式的数据，去除特定列下面的重复行。返回DataFrame格式的数据。 补充： Panda
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2018-08-30 11:10:00
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Given an array of integers, 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements that appear twi
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2016-12-30 11:03:00
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# 测试 merge
import pandas as pd
df = pd.DataFrame()
df["col1"] = [1, 1, 2, 3]
df_right = pd.DataFrame()
df_right["col1"] = [1, 1, 2]
df_right["col2"] = [1, 1, 1]
df_right.drop_duplicates(subset=Non
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2024-04-07 15:56:18
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给定一个排序链表，删除所有含有重复数字的节点，只保留原始链表中 没有重复出现 的数字。 示例 1: 示例 2:
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2022-01-17 16:46:43
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QuestionGiven an array of integers, 1 ≤ a[i] ≤ n (n = size of array), some elemeny.Could you do it without ext
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2023-02-02 14:58:08
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Given a sorted array, remove the duplicates in place such that each element appear onlyonceand return the new length.Do not allocate extra space for a...
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2014-08-07 08:46:00
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Remove Duplicates from Sorted ArrayGiven a sorted array, remove the duplicates in place such that each element appear onlyonceand return the new lengt...
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2021-08-07 12:05:58
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my solution: put integer A[i] at index A[i]-1 unless A[i] already equals i +1 or A[i] == A[A[i]-1] later scan again if at index i, A[i] != i+1, then A
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2016-12-13 12:12:00
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Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length. Do not allocate extra space fo
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2016-03-27 12:34:00
42阅读
2评论
Remove Duplicates from Sorted ArrayGiven a sorted array, remove the duplicates in place such that each element appear onlyonceand return the new lengt...
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2014-11-14 19:59:00
52阅读
2评论
Given a sorted linked list, delete all duplicates such that each element appear onlyonce.For example,Given1->1->2, return1->2.Given1->1->2->3->3, retu...
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2014-09-05 05:29:00
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https://leetcode.com/problems/remove-duplicates-from-sorted-array/题目Given a sorted
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2022-09-07 16:45:59
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A. Remove Duplicatestime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputPetya has an array aa consisting of nn integers. He wants t
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2023-02-08 07:31:56
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Remove Duplicates from Sorted ListGiven a sorted linked list, delete all duplicates such that each element appear onlyonce.For example,Given1->1->2, r...
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2021-08-07 11:43:24
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今天发现自已一直忽视了一个问题， DELETE - duplicates 删除内表重复记录语句是有条件限制的，必需是
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2022-11-23 12:28:09
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