Python 常见的获取文本文件的行数的多种方法_python查看文件有多少行

使用len(file.readlines())：

file_path = 'your_file.txt'
with open(file_path, 'r') as file:
    line_count = len(file.readlines())
print("方法1 - 文本文件的行数:", line_count)
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使用sum(1 for line in file)：

file_path = 'your_file.txt'
with open(file_path, 'r') as file:
    line_count = sum(1 for line in file)
print("方法2 - 文本文件的行数:", line_count)
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逐行迭代计数：

file_path = 'your_file.txt'
line_count = 0
with open(file_path, 'r') as file:
    for line in file:
        line_count += 1
print("方法3 - 文本文件的行数:", line_count)
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使用wc命令（仅限Unix/Linux系统）：

import subprocess

file_path = 'your_file.txt'
line_count = int(subprocess.check_output(["wc", "-l", file_path]).split()[0])
print("方法4 - 文本文件的行数:", line_count)
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使用pandas库：

import pandas as pd

file_path = 'your_file.txt'
df = pd.read_csv(file_path, header=None)
line_count = len(df)
print("方法5 - 文本文件的行数:", line_count)
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