Python raw_input 使用 TAB 而不是 ENTER? [英] Python raw_input use TAB instead of ENTER?

问题描述

我编写了这个小脚本来处理从我商店的销售点导出的 CSV 文件.它需要我们的条码扫描器输入的条码列表.然后在列表中查找这些物品，以根据销售点声称拥有的物品快速检查我们的实物库存.

I've made this little script to handle a CSV export from my store's point of sale. It takes a list of barcodes entered by our barcode scanner. Then looks up those items in a list to quickly check our physical inventory from what the point of sale claims we have.

它有效......我很好奇我是否可以从其默认使用的 ENTER 更改 raw_input 并将其替换为 TAB?

It works... what I'm curious is if I can change raw_input from it's default use of ENTER and replace it with TAB?

我的条码扫描器被编程为在扫描条码后使用 TAB(正如我们的 POS 要求那样)，这将使在扫描物品时不必操作键盘变得非常方便.

My barcode scanner is programmed to use a TAB after it scans a barcode (as our POS demands that it does), would make it real handy to not have to man the keyboard while scanning items.

有可能吗?

import csv

inv = csv.reader(open('onhand.tab', 'rU'), dialect='excel-tab', delimiter="\t")

invarray = []
countlist = []

for row in inv:
    invarray.append(row)

print "Input barcode followed by <ENTER>. When finished, 'x' followed by <ENTER>"
while True:
    bb = raw_input('> ')
    countlist.append(bb)
    if bb == 'x':
        break

print "\n" * 100
print "+" + "-" * 130 + "+"

for row in invarray:
    barcode = row[0]
    prod_name = row[8]
    main = row[4]
    vb = row[12]
    oo = row[6]
    toh = row[9]
    mnum = row[5]

    for row in countlist:
        bc = row[0]
        if bc == barcode:
            print ('|%-15s\t%-100s\t%-3s|') % (barcode, prod_name, main)
            print "+" + "-" * 130 + "+"

推荐答案

你不能；raw_input() 仅在输入 ENTER 时返回控制权.

You cannot; raw_input() only returns control when ENTER has been entered.

直接从sys.stdin 直接代替:

Read directly from sys.stdin directly instead:

barcode = []
while True:
    char = sys.stdin.read(1)  # read 1 character from stdin
    if char == '\t':  # if a tab was read
        break
    barcode.append(char)
countlist.append(''.join(barcode))

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