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bajins
scripts_python
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file_example.py
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file_example.py
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# 'r' :只读模式,对文件进行读取操作。
# 'w' :写入模式,覆盖文件原有内容,如果文件不存在则创建新文件。
# 'a' :追加模式,在文件末尾追加新内容,如果文件不存在则创建新文件。
# 'x' :创建模式,创建新文件,如果文件已存在则报错。
# 'b' :二进制模式,对文件进行二进制读写操作。
if __name__ == '__main__':
# 以二进制模式打开文件
with open(r"C:\Users\claer\Desktop\.lemminx.7z", 'rb') as file:
# 读取文件内容(二进制)
binary_data = file.read()
with open(r"C:\Users\claer\Desktop\三一看板优化\boardentsitcenter\images\center\border_bg_center.png", 'ab') as file:
print(file.tell())
# 写入文件内容(二进制)
file.write(binary_data)
# 获取追加内容的起始位置和长度
# with open(r"C:\Users\claer\Downloads\alert_bg.png", 'rb') as file:
# # 定位到文件末尾
# file.seek(0, 2)
# end_position = file.tell() # 记录文件末尾位置
# # 计算追加内容的长度
# content_length = len(binary_data)
# # 定位到追加内容之前的位置
# file.seek(end_position - content_length)
# start_position = file.tell() # 记录追加内容起始位置
# # 打印追加内容的起始位置和长度
# print("起始位置:", start_position)
# print("长度:", content_length)
# 移除二进制文件中部分内容
# with open(r"C:\Users\claer\Downloads\bg.png", 'rb+') as file:
# file.seek(start_position)
# remaining_data = file.read()
#
# file.seek(start_position)
# file.write(remaining_data[content_length:])
#
# file.truncate(file.tell())
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