Question

我有一个包含非结构化文本的数据框。在这个可重复的例子中，我正在从SEC网站直接下载一家10K公司的文件并加载read.table。

dir = getwd(); setwd(dir)

download.file("https://www.sec.gov/Archives/edgar/data/2648/0000002648-96-000013.txt", file.path(dir,"filing.txt"))

filing <- read.table(file=file.path(dir, "filing.txt"), sep="\t", quote="", comment.char="")
droplevels.data.frame(filing)

我想删除SEC标题，以便专注于文档的主体（从第216行开始）并将我的文本划分为部分/项目。

> filing$V1[216:218]
[1] PART I 
[2] Item  1.    Business.                                                                                                                                                      
[3]            A.  Organization of Business

因此，我正在尝试匹配以单词Item（或ITEM）开头的字符串，后跟一个或多个空格，一个或两个数字，一个点，一个或多个空格和一个或多个单词。例如：

Item 1. Business.
ITEM 1.  BUSINESS
Item  1.  Business
Item 10. Directors and Executive Officers of 
ITEM  10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

我的尝试涉及str_detect和regex，以便创建一个每次有字符串匹配时跳转的变量计数。

library(dplyr)
library(stringr)
tidy_filing <- filing %>% mutate(count = cumsum(str_detect(V1, regex("^Item [\\d]{1,2}\\.",ignore_case = TRUE)))) %>% ungroup()

但是，我错过了前9项，我的计数仅从第10项开始。

tidy_filing[c(217, 218,251:254),]
       V1                               count
217    Item  1.   Business.               0
218    A.  Organization of Business 3     0
251                          PART III     0
252    Item 10.   Directors etc.   38     1
253    Item 11.   Executive Compens. 38   2
254    Item 12.   Security Ownership. 38  3

任何帮助都将受到高度赞赏。

Answer 1

问题是单个数字项目有两个空格，以便与两位数字对齐。您可以通过将正则表达式字符串更改为

来解决此问题

import random
import tkinter
from tkinter import *
from tkinter import messagebox
from PIL import ImageTk, Image

NONE=0
TAGGING=1
MAKECANVAS=4
TAGS=["some text","some more text"]
PICS=["c:/users/rob/desktop/camera.jpg","c:/users/rob/desktop/fridge.jpg"]

class Window(Frame):
    def __init__(self,master):
        Frame.__init__(self, master)             
        self.master=master
        self.mode=NONE
        self.init_window()
        self.start_tagging()
    def start_tagging(self):
        if self.photo is not None:
            self.photo.destroy()
            self.photo=None
        messagebox.showinfo("Start tagging")
        self.mode=TAGGING
        self.configure_buttons()
        self.show_pic()
    def init_window(self):
        menubar=Menu(self.master)
        menu=Menu(menubar,tearoff=0)
        menu.add_command(label="Start tagging",command=self.start_tagging)
        menu.add_command(label="Make canvas",command=self.start_make_canvas)
        menubar.add_cascade(label="Tag",menu=menu)
        self.master.config(menu=menubar)
        self.pack(fill=BOTH,expand=1) #take full space of root window
        self.photo=None
        self.tag_trk={}
        row=1
        for tag in TAGS:
            self.tag_trk[tag]=IntVar()
            Checkbutton(self,text=tag,variable=self.tag_trk[tag]).place(x=500,y=10+20*row)
            row+=1
        self.tag_count=StringVar()
        self.button1_label=StringVar()
        self.btn1=Button(self,textvariable=self.button1_label,command=self.button1_click)
        self.btn1.place(x=10,y=495)
        self.max_score=StringVar()
    def configure_buttons(self):
        if self.mode==NONE:
            self.button1_label.set("Tag")
        elif self.mode==TAGGING:
            self.button1_label.set("Next")
        elif self.mode==MAKECANVAS:
            self.button1_label.set("Make")
    def button1_click(self):
        if self.mode==TAGGING:
            self.show_pic()
        elif self.mode==MAKECANVAS:
            # do some things here
            for e in self.form: e.destroy()
            self.mode=NONE
            self.configure_buttons()
        elif self.mode==NONE:
            self.start_tagging()
    def show_pic(self):
        if self.photo is not None:
            self.photo.destroy()
        img=ImageTk.PhotoImage(Image.open(random.choice(PICS)))
        self.photo=tkinter.Label(self,image=img,borderwidth=0)
        self.photo.image=img
        self.photo.place(x=15,y=5)
    def start_make_canvas(self):
        if self.photo is not None:
            self.photo.destroy()
            self.photo=None
        self.mode=MAKECANVAS
        self.form=[]
        e=Label(self,text='Max score')
        e.place(x=80,y=200)
        self.form.append(e)
        e=Entry(self,textvariable=self.max_score,width=20)
        e.place(x=180,y=200)
        self.form.append(e)
        self.form[1].focus_set()
        self.configure_buttons()

def target_tags():
    global root
    root=tkinter.Tk()
    root.geometry("700x570")
    root.protocol("WM_DELETE_WINDOW", on_closing)
    app=Window(root)
    root.mainloop()

def on_closing():
    global root
    root.destroy()

if __name__ == "__main__":
    target_tags()

使用str_detect和regex匹配字符串

1 个答案: